[AWS::DMS::ReplicationConfig] Feature Request to support S3 URI of a JSON file for the TableMappings property in CloudFormation.

### Name of the resource

Other

### Resource name

AWS::DMS::ReplicationConfig

### Description

Currently, the [`TableMappings`](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-dms-replicationconfig.html#cfn-dms-replicationconfig-tablemappings) property on supports specifying table mapping in a form of a JSON. The mappings can be a lot and increase template size.

Requesting a feature request to allow the [`TableMappings`](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-dms-replicationconfig.html#cfn-dms-replicationconfig-tablemappings) property to accept S3 URI of the JSON file containing the table mappings.

### Other Details

_No response_