ci: bump marocchino/sticky-pull-request-comment from 2 to 3 (#227)

Bumps [marocchino/sticky-pull-request-comment](https://github.com/marocchino/sticky-pull-request-comment) from 2 to 3.
- [Release notes](https://github.com/marocchino/sticky-pull-request-comment/releases)
- [Commits](marocchino/sticky-pull-request-comment@v2...v3)

---
updated-dependencies:
- dependency-name: marocchino/sticky-pull-request-comment
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/coverage-comment.yml

@@ -35,7 +35,7 @@ jobs:
           fi
 
       - name: Post Comment
-        uses: marocchino/sticky-pull-request-comment@v2
+        uses: marocchino/sticky-pull-request-comment@v3
         with:
           header: coverage
           number: ${{ env.PR_NUMBER }}