fix: remove invalid members permission breaking redirect workflow

The 'members: read' permission key added in #586 is not a valid
GitHub Actions permission, causing the workflow YAML to fail
validation. This broke auto-closing of PRs (#587, #588).

The repos.checkCollaborator API works with the default GITHUB_TOKEN
repo access — no extra permission is needed.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: brandom-msft

.github/workflows/redirect-pull-requests.yml

@@ -6,7 +6,6 @@ on:
 
 permissions:
   pull-requests: write
-  members: read
 
 jobs:
   redirect: