Fix buildkit-cache-dance v3 API: replace deprecated cache-source with cache-map#1979

SamMorrowDrums merged 2 commits intodependabot/github_actions/reproducible-containers/buildkit-cache-dance-3.3.1github/github-mcp-server:dependabot/github_actions/reproducible-containers/buildkit-cache-dance-3.3.1from

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