Try out stale (#469)

* Try out stale

* Update stale.yml

* Update stale.yml

.github/workflows/stale.yml

@@ -1,5 +1,11 @@
 name: 'Close stale issues and PRs'
+
 on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    paths:
+      - .github/workflows/stale.yml
+  workflow_dispatch:
   schedule:
     - cron: '30 1 * * *'
 
@@ -9,6 +15,7 @@ jobs:
     steps:
       - uses: actions/stale@v9
         with:
+          operations-per-run: 180
           stale-issue-message: 'This issue is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 14 days.'
           stale-pr-message: 'This PR is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 14 days.'
           close-issue-message: 'This issue was closed because it has been stalled for 14 days with no activity.'