Attempt to fix stale bot

See actions/stale#792

.github/workflows/stale.yml

@@ -11,7 +11,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v8
+      - uses: actions/stale@main
         with:
           stale-issue-message: |
             This issue has been open for a while with no recent activity. If this issue is still important to you, please add a comment within the next 7 days to keep it open. Otherwise, the issue will be automatically closed to free up time for other tasks.
@@ -33,3 +33,5 @@ jobs:
           days-before-close: 7
           stale-issue-label: "status:stale"
           stale-pr-label: "status:stale"
+          operations-per-run: 60
+          enable-statistics: true