update slot resume pointers for step 487

slots/14/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:14", "checkpoint": "slots/14/checkpoint-409", "step": 409, "updated_at": 1776360858}
+{"worker_id": "slot:14", "checkpoint": "slots/14/checkpoint-487", "step": 487, "updated_at": 1776388487}