Update label-conflict.yml

.github/workflows/label-conflict.yml

@@ -1,11 +1,9 @@
 name: "Maintenance"
 on:
-  # So that PRs touching the same files as the push are updated
   push:
-  # So that the `dirtyLabel` is removed if conflicts are resolve
-  # We recommend `pull_request_target` so that github secrets are available.
-  # In `pull_request` we wouldn't be able to change labels of fork PRs
-  pull_request_target:
+    branches:
+      - main
+  pull_request:
     types: [synchronize]
 
 jobs: