Update main.yml

Author: mcbarton

.github/workflows/main.yml

@@ -11,8 +11,8 @@ on:
     - cron: '30 20 * * *' # Warning: Timezone dep - 20:00 is 1:00
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  cancel-in-progress: true
 
 jobs:
   build: