ci: cancel on new commit

Author: pinpong

.github/workflows/pull_request.yml

@@ -3,6 +3,10 @@ on:
   pull_request:
     branches: [dev, main]
 
+concurrency:
+  group: pr-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     runs-on: macos-latest