update slot resume pointers for step 4752

slots/1/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:1", "checkpoint": "slots/1/checkpoint-1730", "step": 1730, "updated_at": 1776684119}
+{"worker_id": "slot:1", "checkpoint": "slots/1/checkpoint-4752", "step": 4752, "updated_at": 1776735408}