🐛(ci) improve docker-hub

Avoid to notify argocd for nothing

.github/workflows/docker-hub.yml

@@ -121,6 +121,8 @@ jobs:
       - build-and-push-frontend
       - build-and-push-backend
     runs-on: ubuntu-latest
+    if: |
+      github.event_name != 'pull_request'
     steps:
       -
         name: Checkout