chore(deps): update docker/metadata-action action to v6 (#90)

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

Author: renovate[bot]

.github/workflows/docker.yml

@@ -97,7 +97,7 @@ jobs:
 
       - name: Generate docker image tags
         id: metadata
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           flavor: |
             # Disable latest tag