Update docker/build-push-action action to v7

.gitea/workflows/build-php.yml

@@ -25,7 +25,7 @@ jobs:
         password: ${{ secrets.REGISTRY_PASSWORD }}
 
     - name: Build and Push
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7
       with:
         context: .
         file: php/Dockerfile.php${{ matrix.php_version }}