Update actions/labeler action to v6

| datasource  | package         | from | to |
| ----------- | --------------- | ---- | -- |
| github-tags | actions/labeler | v5   | v6 |


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

Author: renovate[bot]

.github/workflows/labeler.yml

@@ -19,7 +19,7 @@ jobs:
           sparse-checkout-cone-mode: false
           repository: opentracing-contrib/common
 
-      - uses: actions/labeler@v5
+      - uses: actions/labeler@v6
         with:
           repo-token: "${{ secrets.GITHUB_TOKEN }}"
           sync-labels: true