diff --git a/.github/workflows/__analyze-ref-input.yml b/.github/workflows/__analyze-ref-input.yml
index 671e5f57b8..9b4ddcdb7a 100644
--- a/.github/workflows/__analyze-ref-input.yml
+++ b/.github/workflows/__analyze-ref-input.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: analyze-ref-input-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: analyze-ref-input-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   analyze-ref-input:
     strategy:
@@ -93,11 +83,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__local-bundle.yml b/.github/workflows/__local-bundle.yml
index ae77983001..2a83eede83 100644
--- a/.github/workflows/__local-bundle.yml
+++ b/.github/workflows/__local-bundle.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: local-bundle-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: local-bundle-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   local-bundle:
     strategy:
@@ -93,11 +83,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__packaging-codescanning-config-inputs-js.yml b/.github/workflows/__packaging-codescanning-config-inputs-js.yml
index d0304ecd1d..be29a9cb04 100644
--- a/.github/workflows/__packaging-codescanning-config-inputs-js.yml
+++ b/.github/workflows/__packaging-codescanning-config-inputs-js.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: packaging-codescanning-config-inputs-js-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: packaging-codescanning-config-inputs-js-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   packaging-codescanning-config-inputs-js:
     strategy:
@@ -104,11 +94,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__remote-config.yml b/.github/workflows/__remote-config.yml
index abf5cd21e2..856b38aee6 100644
--- a/.github/workflows/__remote-config.yml
+++ b/.github/workflows/__remote-config.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: remote-config-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: remote-config-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   remote-config:
     strategy:
@@ -95,11 +85,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__unset-environment.yml b/.github/workflows/__unset-environment.yml
index 5be68f8102..32d953522a 100644
--- a/.github/workflows/__unset-environment.yml
+++ b/.github/workflows/__unset-environment.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: unset-environment-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: unset-environment-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   unset-environment:
     strategy:
@@ -95,11 +85,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__upload-ref-sha-input.yml b/.github/workflows/__upload-ref-sha-input.yml
index f9a832d7ee..afa8371a0f 100644
--- a/.github/workflows/__upload-ref-sha-input.yml
+++ b/.github/workflows/__upload-ref-sha-input.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: upload-ref-sha-input-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: upload-ref-sha-input-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   upload-ref-sha-input:
     strategy:
@@ -93,11 +83,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__upload-sarif.yml b/.github/workflows/__upload-sarif.yml
index 873ba5ca99..b0afc5b2d0 100644
--- a/.github/workflows/__upload-sarif.yml
+++ b/.github/workflows/__upload-sarif.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: upload-sarif-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: upload-sarif-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   upload-sarif:
     strategy:
@@ -100,11 +90,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/__with-checkout-path.yml b/.github/workflows/__with-checkout-path.yml
index 11f6e1dbc0..0e84191869 100644
--- a/.github/workflows/__with-checkout-path.yml
+++ b/.github/workflows/__with-checkout-path.yml
@@ -30,11 +30,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -47,11 +42,6 @@ on:
         description: The version of Go to install
         required: false
         default: '>=1.21.0'
-      python-version:
-        type: string
-        description: The version of Python to install
-        required: false
-        default: '3.13'
       dotnet-version:
         type: string
         description: The version of .NET to install
@@ -62,7 +52,7 @@ defaults:
     shell: bash
 concurrency:
   cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: with-checkout-path-${{github.ref}}-${{inputs.go-version}}-${{inputs.python-version}}-${{inputs.dotnet-version}}
+  group: with-checkout-path-${{github.ref}}-${{inputs.go-version}}-${{inputs.dotnet-version}}
 jobs:
   with-checkout-path:
     strategy:
@@ -94,11 +84,6 @@ jobs:
         with:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
-      - name: Install Python
-        if: matrix.version != 'nightly-latest'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ inputs.python-version || '3.13' }}
       - name: Install .NET
         uses: actions/setup-dotnet@v5
         with:
diff --git a/pr-checks/checks/analyze-ref-input.yml b/pr-checks/checks/analyze-ref-input.yml
index e9d2cd1764..f3425ec707 100644
--- a/pr-checks/checks/analyze-ref-input.yml
+++ b/pr-checks/checks/analyze-ref-input.yml
@@ -2,7 +2,6 @@ name: "Analyze: 'ref' and 'sha' from inputs"
 description: "Checks that specifying 'ref' and 'sha' as inputs works"
 versions: ["default"]
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   - uses: ./../action/init
diff --git a/pr-checks/checks/local-bundle.yml b/pr-checks/checks/local-bundle.yml
index c0930772e6..2d090d432e 100644
--- a/pr-checks/checks/local-bundle.yml
+++ b/pr-checks/checks/local-bundle.yml
@@ -2,7 +2,6 @@ name: "Local CodeQL bundle"
 description: "Tests using a CodeQL bundle from a local file rather than a URL"
 versions: ["linked"]
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   - name: Fetch latest CodeQL bundle
diff --git a/pr-checks/checks/packaging-codescanning-config-inputs-js.yml b/pr-checks/checks/packaging-codescanning-config-inputs-js.yml
index 6fd0f7c8a1..20fd16a48b 100644
--- a/pr-checks/checks/packaging-codescanning-config-inputs-js.yml
+++ b/pr-checks/checks/packaging-codescanning-config-inputs-js.yml
@@ -3,7 +3,6 @@ description: "Checks that specifying packages using a combination of a config fi
 versions: ["linked", "default", "nightly-latest"] # This feature is not compatible with old CLIs
 installGo: true
 installNode: true
-installPython: true
 installDotNet: true
 steps:
   - uses: ./../action/init
diff --git a/pr-checks/checks/remote-config.yml b/pr-checks/checks/remote-config.yml
index 24249156ea..9211cb2128 100644
--- a/pr-checks/checks/remote-config.yml
+++ b/pr-checks/checks/remote-config.yml
@@ -6,7 +6,6 @@ versions:
   - linked
   - nightly-latest
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   - uses: ./../action/init
diff --git a/pr-checks/checks/unset-environment.yml b/pr-checks/checks/unset-environment.yml
index 4cc728600a..dd41f159b5 100644
--- a/pr-checks/checks/unset-environment.yml
+++ b/pr-checks/checks/unset-environment.yml
@@ -6,7 +6,6 @@ versions:
   - linked
   - nightly-latest
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   - uses: ./../action/init
diff --git a/pr-checks/checks/upload-ref-sha-input.yml b/pr-checks/checks/upload-ref-sha-input.yml
index 0c8059a515..95b753b2bd 100644
--- a/pr-checks/checks/upload-ref-sha-input.yml
+++ b/pr-checks/checks/upload-ref-sha-input.yml
@@ -2,7 +2,6 @@ name: "Upload-sarif: 'ref' and 'sha' from inputs"
 description: "Checks that specifying 'ref' and 'sha' as inputs works"
 versions: ["default"]
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   - uses: ./../action/init
diff --git a/pr-checks/checks/upload-sarif.yml b/pr-checks/checks/upload-sarif.yml
index 8009225c2e..403cdab3a9 100644
--- a/pr-checks/checks/upload-sarif.yml
+++ b/pr-checks/checks/upload-sarif.yml
@@ -3,7 +3,6 @@ description: "Checks that uploading SARIFs to the code quality endpoint works"
 versions: ["default"]
 analysisKinds: ["code-scanning", "code-quality", "code-scanning,code-quality"]
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   - uses: ./../action/init
diff --git a/pr-checks/checks/with-checkout-path.yml b/pr-checks/checks/with-checkout-path.yml
index 230e342e30..6f69d45d85 100644
--- a/pr-checks/checks/with-checkout-path.yml
+++ b/pr-checks/checks/with-checkout-path.yml
@@ -2,7 +2,6 @@ name: "Use a custom `checkout_path`"
 description: "Checks that a custom `checkout_path` will find the proper commit_oid"
 versions: ["linked"]
 installGo: true
-installPython: true
 installDotNet: true
 steps:
   # This ensures we don't accidentally use the original checkout for any part of the test.