chore(deps): update mheap/github-action-required-labels action to v5 (#1599)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/pull-request-labels.yaml

@@ -6,7 +6,7 @@ jobs:
   label:
     runs-on: ubuntu-latest
     steps:
-      - uses: mheap/github-action-required-labels@v4
+      - uses: mheap/github-action-required-labels@v5
         with:
           mode: exactly
           count: 1