build(deps): bump actions/stale from 8 to 9 (#391)

Author: dependabot[bot]

.github/workflows/stale.yml

@@ -20,7 +20,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v8
+      - uses: actions/stale@v9
         with:
           stale-issue-message: "This issue is stale because it has been opened for 60 days with no activity. Remove stale label or comment. Otherwise, it will be closed in 30 days."
           stale-pr-message: "This PR is stale because it has been opened for 45 days with no activity. Remove stale label or comment. Otherwise, it will be closed in 30 days."