Specify when to run the workflow

Author: lauzadis

.github/workflows/kat-verification.yml

@@ -2,6 +2,8 @@ name: Kat Verification
 
 on:
   pull_request:
+    types: [ opened, synchronize, reopened, labeled, unlabeled ]
+    branches: [ main ]
 
 # Allow one instance of this workflow per pull request, and cancel older runs when new changes are pushed
 concurrency: