update slot resume pointers for step 6003

slots/4/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:4", "checkpoint": "slots/4/checkpoint-5157", "step": 5157, "updated_at": 1776438783}
+{"worker_id": "slot:4", "checkpoint": "slots/4/checkpoint-6003", "step": 6003, "updated_at": 1776440724}