[v3-2-test] CI: Run CodeQL only on languages changed in a pull request (#67972)#68024
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) PR-triggered CodeQL is by far the most frequent workflow in the repo (~1,300+ runs/week), and every run fans out one job per language (python, javascript, actions, go, java) regardless of what changed. The java job in particular runs a full Gradle build on every PR even though java-sdk files change in well under 1% of PRs. Gate the language matrix on the files actually changed in the PR: a docs-only PR now runs nothing, and the common python-only PR runs a single job instead of five. push-to-main and scheduled runs still scan every language, so coverage of the main branch is unchanged. (cherry picked from commit c91dc3b)
shahar1
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shahar1
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shahar1
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amoghrajesh
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Jun 4, 2026
bugraoz93
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Jun 4, 2026
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Backport of #67972 to v3-2-test.
This change makes CodeQL analysis more efficient by only running scans on languages whose files actually changed in a PR, while maintaining full coverage on pushes to main and scheduled runs.
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