Merge pull request #7339 from weseek/dependabot/github_actions/docker/build-push-action-4

ci(deps): bump docker/build-push-action from 2 to 4

.github/workflows/release-slackbot-proxy.yml

@@ -58,7 +58,7 @@ jobs:
       uses: docker/setup-buildx-action@v2
 
     - name: Build and push
-      uses: docker/build-push-action@v2
+      uses: docker/build-push-action@v4
       with:
         context: .
         file: ./packages/slackbot-proxy/docker/Dockerfile