FIX ci

Author: pubkey

.github/workflows/main.yml

@@ -10,6 +10,11 @@ on:
 
   workflow_dispatch:
 
+# https://stackoverflow.com/a/72408109/3443137
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     runs-on: ubuntu-22.04