Runner stale bot (actions#2729)

* runner stale bot test

* Update stale-bot.yml

.github/workflows/stale-bot.yml

@@ -0,0 +1,17 @@
+name: ‘Close stale Runner issues’
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * 1' # every monday at midnight
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v8
+        with:
+          stale-issue-message: ‘This issue is stale because it has been open 365 days with no activity. Remove stale label or comment or this will be closed in 15 days.’
+          close-issue-message: ‘This issue was closed because it has been stalled for 15 days with no activity.’
+          exempt-issue-labels: ‘keep’
+          days-before-stale: 365
+          days-before-close: 15
+          debug-only: true