ci: update STALE-ISSUES workflow from global .github repo

Signed-off-by: microcks-bot <info@microcks.io>

Author: microcks-bot

.github/workflows/stale-issues-prs.yml

@@ -17,7 +17,7 @@ jobs:
     name: Mark issue or PR as stale
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@28ca1036281a5e5922ead5184a1bbf96e5fc984e # To pin v9.0.0 
+      - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639 # To pin v9.1.0
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           stale-issue-message: |