update slot resume pointers for step 8151

slots/14/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:14", "checkpoint": "slots/14/checkpoint-5234", "step": 5234, "updated_at": 1776438907}
+{"worker_id": "slot:14", "checkpoint": "slots/14/checkpoint-8151", "step": 8151, "updated_at": 1776469445}