Update docker/build-push-action action to v6

Author: renovate[bot]

Diff for: .github/workflows/ci.yml

@@ -55,7 +55,7 @@ jobs:
         uses: docker/setup-buildx-action@v1
 
       - name: push
-        uses: docker/build-push-action@v2.10.0
+        uses: docker/build-push-action@v6.13.0
         with:
           # platforms: linux/arm64,linux/amd64
           tags: ${{ steps.docker_meta.outputs.tags }}