update operations per run (#14325)

diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 950526d..f55de7c 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -95,4 +95,4 @@
           exempt-milestones: true
           exempt-assignees: true
           ascending: true
-          operations-per-run: 50 
+          operations-per-run: 200