fix: add write permissions to update-configs workflow

- Add contents: write permission for git operations
- Enables workflow to commit and push template updates
- Fixes permission denied errors during config sync

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

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

Author: vjdhama

.github/workflows/update-configs.yaml

@@ -3,6 +3,9 @@
     on:
       workflow_dispatch:
 
+    permissions:
+      contents: write
+
     jobs:
       update:
         runs-on: ubuntu-latest