Update docker/build-push-action action to v7

Author: renovate[bot]

.github/workflows/docker-build-push.yml

@@ -37,7 +37,7 @@ jobs:
             echo "::set-output name=BUILD_ID::${branch}-${sha}-${ts}"
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}