update slot resume pointers for step 60

slots/0/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:0", "checkpoint": "slots/0/checkpoint-75", "step": 75, "updated_at": 1776325437}
+{"worker_id": "slot:0", "checkpoint": "slots/0/checkpoint-60", "step": 60, "updated_at": 1776326904}