Bump crazy-max/ghaction-github-labeler from 5 to 6

Bumps [crazy-max/ghaction-github-labeler](https://github.com/crazy-max/ghaction-github-labeler) from 5 to 6.
- [Release notes](https://github.com/crazy-max/ghaction-github-labeler/releases)
- [Commits](https://github.com/crazy-max/ghaction-github-labeler/compare/v5...v6)

---
updated-dependencies:
- dependency-name: crazy-max/ghaction-github-labeler
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/sync-labels.yaml

@@ -16,7 +16,7 @@ jobs:
       uses: actions/checkout@v6
 
     - name: Sync labels
-      uses: crazy-max/ghaction-github-labeler@v5
+      uses: crazy-max/ghaction-github-labeler@v6
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         yaml-file: .github/labels.yaml