Update stale.yml

Author: pattacini

.github/workflows/stale.yml

@@ -8,7 +8,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v9.0.0
+      - uses: actions/stale@v9
         with:
           stale-issue-message: 'This issue has been automatically marked as stale because it did not have recent activity. It will be closed if no further activity occurs.'
           close-issue-message: 'This issue has been automatically closed due to inactivity. Feel free to open it again if needed.'