Merge pull request #5469 from wekan/dependabot/github_actions/docker/build-push-action-6.4.0

Bump docker/build-push-action from 6.3.0 to 6.4.0

.github/workflows/docker-publish.yml

@@ -55,7 +55,7 @@ jobs:
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
-        uses: docker/build-push-action@1a162644f9a7e87d8f4b053101d1d9a712edc18c
+        uses: docker/build-push-action@a254f8ca60a858f3136a2f1f23a60969f2c402dd
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}