CI: Bump peter-evans/find-comment from 3.1.0 to 4.0.0

Bumps [peter-evans/find-comment](https://github.com/peter-evans/find-comment) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/peter-evans/find-comment/releases)
- [Commits](peter-evans/find-comment@3eae4d3...b30e6a3)

---
updated-dependencies:
- dependency-name: peter-evans/find-comment
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/extension-validation.yml

@@ -115,7 +115,7 @@ jobs:
 
       - name: Find Comment
         if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository && always()
-        uses: peter-evans/find-comment@3eae4d37986fb5a8592848f6a574fdf654e61f9e # v3.1.0
+        uses: peter-evans/find-comment@b30e6a3c0ed37e7c023ccd3f1db5c6c0b0c23aad # v4.0.0
         id: fc
         with:
           issue-number: ${{ github.event.pull_request.number }}