update slot resume pointers for step 7811

slots/3/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:3", "checkpoint": "slots/3/checkpoint-6185", "step": 6185, "updated_at": 1776740378}
+{"worker_id": "slot:3", "checkpoint": "slots/3/checkpoint-7811", "step": 7811, "updated_at": 1776774172}