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

Author: renovate[bot]

.github/workflows/release-build.yml

@@ -155,7 +155,7 @@ jobs:
 
       # https://github.com/marketplace/actions/docker-metadata-action
       - name: Docker Metadata
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         id: metadata
         with:
           tags: type=raw,value=php-${{ matrix.PHP_VERSION }}-node-${{ matrix.NODE_VERSION }}