Newline chars are not supported in sagemaker feature store string types

Similar issue to https://github.com/aws/sagemaker-python-sdk/issues/3295#issue-1336927723 where the sagemaker sdk will throw an exception like
```sh
ERROR:sagemaker.feature_store.feature_group:Failed to ingest row XX:
An error occurred (ValidationException) when calling the PutRecord operation:
1 validation error detected: Value ... at 'record.Y.member.valueAsString' failed to satisfy constraint:
Member must satisfy regular expression pattern: .*
```

if a feature record value string has a `\n` in it. This should be supported for features that contain long text.