Updates an existing cost anomaly monitor. The changes made are applied going forward, and doesn't change anomalies detected in the past.
See https://www.paws-r-sdk.com/docs/costexplorer_update_anomaly_monitor/ for full documentation.
costexplorer_update_anomaly_monitor(MonitorArn, MonitorName = NULL)
[required] Cost anomaly monitor Amazon Resource Names (ARNs).
The new name for the cost anomaly monitor.