fix: add workflow permissions to terraform master workflow

- Add contents: write for git operations
- Add pull-requests: write for PR interactions
- Add actions: read for workflow execution
- Resolves 0s duration workflow failures

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: vjdhama

.github/workflows/terraform.yaml

@@ -14,6 +14,12 @@ on:
     branches:
       - main
       - master
+
+permissions:
+  contents: write
+  pull-requests: write
+  actions: read
+
 jobs:
   prTitlecheck:
     name: PR title check