update slot resume pointers for step 4852

slots/8/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:8", "checkpoint": "slots/8/checkpoint-2230", "step": 2230, "updated_at": 1776685117}
+{"worker_id": "slot:8", "checkpoint": "slots/8/checkpoint-4852", "step": 4852, "updated_at": 1776736240}