Remove branch filter for PR event in CodeQL workflow

Author: mbg

.github/workflows/codeql.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches: [main, releases/v*]
   pull_request:
-    branches: [main, releases/v*]
     # Run checks on reopened draft PRs to support triggering PR checks on draft PRs that were opened
     # by other workflows.
     types: [opened, synchronize, reopened, ready_for_review]