update slot resume pointers for step 6078

slots/19/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:19", "checkpoint": "slots/19/checkpoint-5590", "step": 5590, "updated_at": 1776440492}
+{"worker_id": "slot:19", "checkpoint": "slots/19/checkpoint-6078", "step": 6078, "updated_at": 1776441767}