ci: use pull_request_target to allow conventional commit workflow on forked PRs (pscloud-129)

Author: umesh-sas

.github/workflows/conventional-commits.yml

@@ -1,7 +1,7 @@
 name: PR Conventional Commit Validation
 
 on:
-  pull_request:
+  pull_request_target:
     types: [opened, synchronize, reopened, edited]
     branches:
       - main