Notice of v3 deprecation

Node.js 20.x (the runtime used by CodeQL Action v3) reaches end-of-life on 30 April 2026: https://nodejs.org/en/blog/release/v20.9.0. To keep the Action running on a supported runtime, we have released CodeQL Action v4, which uses Node.js 24.

For more information, please see the Changelog post.

Deprecation warnings

Starting this month, CodeQL Action v3 will begin to emit warnings to the workflow logs that v3 will soon be deprecated.

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