chore(deps): update crazy-max/ghaction-github-labeler action to v6

Author: renovate[bot]

.github/workflows/labelsync.yml

@@ -17,6 +17,6 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Label sync
-        uses: crazy-max/ghaction-github-labeler@v5
+        uses: crazy-max/ghaction-github-labeler@v6
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}