Update Stale Issue action (#130)

.github/workflows/stale.yml

@@ -4,11 +4,16 @@ on:
   schedule:
     - cron: '0 7 * * *'
 
+permissions:
+  actions: write
+  issues: write
+  pull-requests: write
+
 jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v4.0.0
+      - uses: actions/stale@v9
         id: stale
         with:
           stale-issue-message: 'This Issue will be closed in 30 days. Please remove the "Stale" label or comment to avoid closure with no action.'
@@ -21,7 +26,6 @@ jobs:
           close-issue-label: 'closed'
           close-pr-label: 'closed'
           exempt-issue-labels: 'bug,enhancement,documentation,waiting,keep'
+          exempt-pr-labels: 'waiting,keep'
           exempt-all-milestones: true
           exempt-all-assignees: true
-      - name: Print outputs
-        run: echo ${{ join(steps.stale.outputs.*, ',') }}