Avoid double trigger on Pull request

https://github.community/t/how-to-trigger-an-action-on-push-or-pull-request-but-not-both/16662

Author: lambdalisue

.github/workflows/test.yml

@@ -7,8 +7,11 @@ on:
   schedule:
     - cron: '0 7 * * 0'
   push:
+    branches:
+      - main
   pull_request:
-
+    branches:
+      - main
 
 jobs:
   lint: