Merge pull request #298 from weaveworks/dependabot/github_actions/actions/stale-v3.0.15

Bump actions/stale from v3.0.14 to v3.0.15

.github/workflows/periodics-daily.yaml

@@ -11,7 +11,7 @@ jobs:
     steps:
     # Stale by default waits for 60 days before marking PR/issues as stale, and closes them after 7 days.
     # Do not expire the first issues that would allow the community to grow.
-    - uses: actions/stale@v3.0.14
+    - uses: actions/stale@v3.0.15
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'This issue was automatically considered stale due to lack of activity. Please update it and/or join our slack channels to promote it, before it automatically closes (in 7 days).'