chore(deps): update actions/stale action to v9 (open-telemetry#4353)

Author: renovate-bot

.github/workflows/close-stale.yml

@@ -7,7 +7,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v8
+      - uses: actions/stale@v9
         with:
           days-before-stale: 60
           days-before-close: 14