update slot resume pointers for step 2264

slots/9/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:9", "checkpoint": "slots/9/checkpoint-679", "step": 679, "updated_at": 1776399191}
+{"worker_id": "slot:9", "checkpoint": "slots/9/checkpoint-2264", "step": 2264, "updated_at": 1776405893}