Add PHP 8.5 to CI build matrix

Add PHP 8.5 to the lint, tests, and static-analysis job matrices
in build.yml to ensure the library is tested across all PHP versions
from 7.4 to 8.5.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

.github/workflows/build.yml

@@ -22,6 +22,7 @@ jobs:
           - "8.2"
           - "8.3"
           - "8.4"
+          - "8.5"
 
     steps:
       - name: "Checkout"
@@ -95,6 +96,7 @@ jobs:
           - "8.2"
           - "8.3"
           - "8.4"
+          - "8.5"
         dependencies:
           - "lowest"
           - "highest"
@@ -134,6 +136,7 @@ jobs:
           - "8.2"
           - "8.3"
           - "8.4"
+          - "8.5"
 
     steps:
       - name: "Checkout"