chore(repo): limit github token permissions in applicable runs

Author: AgentEnder

.github/workflows/pr-title-validation.yml

@@ -1,10 +1,12 @@
 name: PR Title Validation
 
 on:
-  pull_request_target:
+  pull_request:
     types: [opened, edited, synchronize, reopened]
     branches: [master]
 
+permissions: read-all
+
 jobs:
   validate-pr-title:
     name: Validate PR Title