Bump mheap/github-action-required-labels from 5.5.0 to 5.5.1

Bumps [mheap/github-action-required-labels](https://github.com/mheap/github-action-required-labels) from 5.5.0 to 5.5.1.
- [Release notes](https://github.com/mheap/github-action-required-labels/releases)
- [Commits](mheap/github-action-required-labels@388fd6a...8afbe8a)

---
updated-dependencies:
- dependency-name: mheap/github-action-required-labels
  dependency-version: 5.5.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/pr-labels.yml

@@ -17,7 +17,7 @@ jobs:
       pull-requests: write
     steps:
       - name: 'PR impact specified'
-        uses: mheap/github-action-required-labels@388fd6af37b34cdfe5a23b37060e763217e58b03 # v5.5.0
+        uses: mheap/github-action-required-labels@8afbe8ae6ab7647d0c9f0cfa7c2f939650d22509 # v5.5.1
         with:
           mode: exactly
           count: 1