Add pull_request_target trigger to CodeQL workflow (#355)

Author: notgitika

.github/workflows/codeql.yml

@@ -5,6 +5,8 @@ on:
     branches: ['main']
   pull_request:
     branches: ['main']
+  pull_request_target:
+    branches: ['main']
 
 # Cancel in-progress runs when a new commit is pushed
 concurrency: