Merge main into releases/v3

[github-actions]

Merging a91a3f7 into releases/v3.

Conductor for this PR is @igfoo.

Contains the following pull requests:

• Kotlin: The 2.20.3 release supports Kotlin 2.1.10. #2744 (@igfoo)
• Mergeback v3.28.7 refs/heads/releases/v3 into main #2745 (@marcogario)

Please do the following:

• Ensure the CHANGELOG displays the correct version and date.
• Ensure the CHANGELOG includes all relevant, user-facing changes since the last release.
• Check that there are not any unexpected commits being merged into the releases/v3 branch.
• Ensure the docs team is aware of any documentation changes that need to be released.
• Mark the PR as ready for review to trigger the full set of PR checks.
• Approve and merge this PR. Make sure Create a merge commit is selected rather than Squash and merge or Rebase and merge.
• Merge the mergeback PR that will automatically be created once this PR is merged.
• Merge all backport PRs to older release branches, that will automatically be created once this PR is merged.

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (2)

src/init-action.ts:548

• Add a test verifying that this environment variable is only set for CodeQL CLI v2.20.3 but not for v2.20.4 or above.

core.exportVariable(kotlinLimitVar, "2.1.20");

lib/init-action.js:323

• Add a test verifying that this environment variable is only set for CodeQL CLI v2.20.3 but not for v2.20.4 or above.

core.exportVariable(kotlinLimitVar, "2.1.20");

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[rvermeulen]

Looks good to me. Thanks for the quick workaround!