Unable to use "UseNewMappingType" option while creating the OpenSearch Endpoint for DMS in Cloudformation

I am creating the OpenSearch endpoint via Cloudformation, but need a specific flag set for it to work `"UseNewMappingType": true`. I can see that this option is available in AWS documentation [here](https://docs.aws.amazon.com/dms/latest/APIReference/API_ElasticsearchSettings.html), but I can't use that as it is not available in CloudFormation documentation [here](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-dms-endpoint-elasticsearchsettings.html).

Seems like this needs to be updated in CloudFormation.