CI - update GitHub actions to node20 (#6450)

Bump up to actions/stale@v9 compatible with node20 per
https://github.com/actions/stale/releases/tag/v9.0.0

Related to #6445

Author: pavoljuhas

.github/workflows/stale.yml

@@ -7,12 +7,12 @@ jobs:
   stale:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/stale@v3
+    - uses: actions/stale@v9
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 30 days'
         days-before-stale: 30
         days-before-close: 30
         close-issue-message: 'Issue closed due to inactivity.'
         stale-issue-label: 'triage/stale'
-        exempt-issue-labels: 'triage/accepted,triage/discuss,kind/design-issue,kind/health,kind/roadmap-item,kind/task'
+        exempt-issue-labels: 'triage/accepted,triage/discuss,kind/design-issue,kind/health,kind/roadmap-item,kind/task'