Merge pull request #27077 from mohanboddu/first_contrib_cert_update_action

Update github action to use pull_request_target

Author: openshift-merge-bot[bot]

.github/workflows/first_contrib_cert_generator.yml

@@ -3,7 +3,7 @@ name: Generate Contributor Certificate Preview
 # This action triggers automatically when a pull request is closed,
 # or can be run manually from the Actions tab.
 on:
-  pull_request:
+  pull_request_target:
     types: [closed]
     branches:
       - main