build(deps): bump mheap/github-action-required-labels from 3 to 4

Bumps [mheap/github-action-required-labels](https://github.com/mheap/github-action-required-labels) from 3 to 4.
- [Release notes](https://github.com/mheap/github-action-required-labels/releases)
- [Commits](https://github.com/mheap/github-action-required-labels/compare/v3...v4)

---
updated-dependencies:
- dependency-name: mheap/github-action-required-labels
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/checks.yaml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Check minimum labels
-        uses: mheap/github-action-required-labels@v3
+        uses: mheap/github-action-required-labels@v4
         with:
           mode: minimum
           count: 1