Update deidentify() call for v2beta2 API changes.
Update deidentify() call for v2beta2 API changes.

GoogleCloudPlatform/healthcare-deid,GoogleCloudPlatform/healthcare-deid,GoogleCloudPlatform/healthcare-deid,GoogleCloudPlatform/healthcare-deid,GoogleCloudPlatform/healthcare-deid,GoogleCloudPlatform/healthcare-deid