Auto close stale PRs

.github/workflows/stale.yml

@@ -0,0 +1,24 @@
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+  - cron: "0 0 * * *"
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Close Stale Issues
+        uses: actions/stale@v3.0.3
+        with:
+          repo-token: "{{secrets.GITHUB_TOKEN}}"
+          # The message to post on the pr when tagging it. If none provided, will not mark pull requests stale.
+          stale-pr-message: "This pull request has been inactive for 5 days, it will be closed in 3 days if there still is no activity."
+          days-before-stale: 5
+          days-before-close: 3
+          stale-pr-label: "Stale"
+          only-labels: "Awaiting - Action - Author"
+          operations-per-run: 30
+          remove-stale-when-updated: true