fix(release): add pull-requests: write permission to on_issue_comment workflow

- Update `.github/workflows/on_issue_comment.yaml` to request `pull-requests: write` permission.
- This is required because it calls `release_prepare.yaml` which requests `pull-requests: write` to create the preparation PR.

Author: rickeylev

.github/workflows/on_issue_comment.yaml

@@ -7,6 +7,7 @@ on:
 permissions:
   contents: write
   issues: write
+  pull-requests: write
 
 jobs:
   # This job always runs to prevent GHA from marking the run as failed when