Bump actions/labeler from 3.0.2 to 4 (#234)

Bumps [actions/labeler](https://github.com/actions/labeler) from 3.0.2 to 4.
- [Release notes](https://github.com/actions/labeler/releases)
- [Commits](actions/labeler@v3.0.2...v4)

---
updated-dependencies:
- dependency-name: actions/labeler
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

.github/workflows/labeler.yml

@@ -17,6 +17,6 @@ jobs:
           private_key: ${{ secrets.APP_PRIVATE_KEY }}
 
       - name: Label pull request
-        uses: actions/labeler@v3.0.2
+        uses: actions/labeler@v4
         with:
           repo-token: ${{ steps.generate-token.outputs.token }}