Increasing the operations-per-run for stale issues GH action (#3556)

Author: petyaslavova

.github/workflows/stale-issues.yml

@@ -21,5 +21,5 @@ jobs:
         days-before-close: 30
         stale-issue-label: "Stale"
         stale-pr-label: "Stale"
-        operations-per-run: 10
+        operations-per-run: 20
         remove-stale-when-updated: true