Update docker/build-push-action action to v7

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

Author: renovate[bot]

.github/workflows/push.yml

@@ -50,7 +50,7 @@ jobs:
         password: ${{ secrets.GITHUB_TOKEN }}
     - name: Build and push
       id: docker_build
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         platforms: linux/amd64,linux/arm64
         push: true