Bump actions/labeler from 5 to 7 (#192)

Bumps the actions group with 1 update: [actions/labeler](https://github.com/actions/labeler).


Updates `actions/labeler` from 5 to 7
- [Release notes](https://github.com/actions/labeler/releases)
- [Commits](https://github.com/actions/labeler/compare/v5...v7)

---
updated-dependencies:
- dependency-name: actions/labeler
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

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

.github/workflows/pr-hygiene.yml

@@ -25,7 +25,7 @@ jobs:
     label-areas:
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/labeler@v5
+            - uses: actions/labeler@v7
               with:
                   # Adds, never removes: an area somebody set by hand stays.
                   sync-labels: false