ping WIP PRs that have been inactive for a week (#3107)

*  ping WIP PRs that have been inactive for a week

* Bump the stale action version

.github/workflows/stale.yml

@@ -7,10 +7,20 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v8
+      - uses: actions/stale@v9
         with:
           stale-pr-message: 'This PR is stale because it has been open 30 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 stalled for 5 days with no activity.'
           days-before-stale: 30
           days-before-close: 5
           days-before-issue-stale: -1
+  stale-wip:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          stale-pr-message: ':wave: Hi! It looks like this PR has not had any changes for a week now. Would you like someone to review this PR? If so - please remove the "[WIP]" prefix from the PR title. That will let the community know that this PR is open for a review.'
+          days-before-stale: 7
+          any-of-labels: ':construction: WIP'
+          days-before-close: -1
+          days-before-issue-stale: -1

upcoming-release-notes/3107.md

+---
+category: Maintenance
+authors: [MatissJanis]
+---
+
+CI workflow for pinging PRs that have been in the "WIP" state for a week without an update.