adds a GH action to label PRs without activity for more than 30 days … (

#1982)

.github/workflows/stalled.yml

@@ -0,0 +1,24 @@
+name: Label Stalled PRs
+on:
+  schedule:
+    - cron: '15 15 * * *' # Run every day at 15:15 UTC / 7:15 PST / 8:15 PDT
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    name: Stale PRs
+    steps:
+    - uses: aws-actions/stale-issue-cleanup@v3
+      with:
+	stale-pr-message: This PR has been open without activity for more than 30 days. Labeling this issue stalled. Please close the PR if it is no longer necessary.
+	stale-issue-label: stalled
+        exempt-issue-labels: awaiting-approval
+        stale-pr-label: no-pr-activity
+        exempt-pr-labels: awaiting-approval
+        response-requested-label: response-requested
+
+	closed-for-staleness-label: closed-for-staleness
+
+        stale-pr-label: 'stalled'
+        stale-pr-message: 'This PR is stalled because it has been open for 30 days with no activity.'
+        days-before-stale: 30
+        repo-token: ${{ secrets.GITHUB_TOKEN }}