ci: update STALE-ISSUES workflow from global .github repo (#73)

Signed-off-by: microcks-bot <[email protected]>

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@99b6c709598e2b0d0841cd037aaf1ba07a4410bd #v5.2.0 but pointing to commit for security reasons
+      - uses: actions/stale@28ca1036281a5e5922ead5184a1bbf96e5fc984e # To pin v9.0.0 
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           stale-issue-message: |