Update docker/build-push-action action to v7

Author: renovate[bot]

.github/workflows/docker-image.yml

@@ -43,7 +43,7 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
     - name: Build and push
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: .
         platforms: linux/amd64,linux/arm64