This webhook is triggered when a dial status is updated.
dial.updated
dial_session_id
dial_id
status
{ "event": "dial.updated", "payload": { "dial_session_id": "de3ee23e-ce58-4e05-9e7b-fcb96ba440a6", "dial_id": "5a6c6190-db20-4d8e-86a9-79a6af292dea", "status": "completed" } }