update slot resume pointers for step 7720

slots/17/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:17", "checkpoint": "slots/17/checkpoint-2680", "step": 2680, "updated_at": 1776406698}
+{"worker_id": "slot:17", "checkpoint": "slots/17/checkpoint-7720", "step": 7720, "updated_at": 1776416784}