⬆️ Upgrade docker/metadata-action action to v5.6.1 (#51)

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

Author: renovate[bot]

.github/workflows/docker.yaml

@@ -29,7 +29,7 @@ jobs:
 
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@v5.5.1
+        uses: docker/metadata-action@v5.6.1
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |