run when ready for review, cancel old workflow

.github/workflows/pr.yaml

@@ -1,9 +1,14 @@
 name: test pr
 on:
   pull_request:
+    types: [opened,synchronize,ready_for_review,edited,reopened]
     branches:
       - main
 
+concurrency: 
+  group: ${{ github.head_ref }}
+  cancel-in-progress: true
+
 jobs:
   # Run the lint on every PR, even from external repos
   lint: