Create stale-bot.yml (#4)

Author: davidkonigsberg

.github/workflows/stale-bot.yml

@@ -0,0 +1,22 @@
+name: 'Close stale PRs'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+  workflow_dispatch:
+
+permissions:
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          stale-pr-message: 'This PR is stale because it has been open 25 days with no activity. Remove stale label or comment or this will be closed in 5 days.'
+          close-pr-message: 'This PR was closed because it has been inactive for 5 days after being marked stale.'
+          days-before-issue-stale: -1
+          days-before-issue-close: -1
+          days-before-pr-stale: 25
+          days-before-pr-close: 5
+          operations-per-run: 300