update slot resume pointers for step 485

slots/17/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:17", "checkpoint": "slots/17/checkpoint-351", "step": 351, "updated_at": 1776357749}
+{"worker_id": "slot:17", "checkpoint": "slots/17/checkpoint-485", "step": 485, "updated_at": 1776387700}