`ValidationError` field names are not camelized

[Victor Engmark]

When I raise rest_framework.serializers.ValidationError({'some_field_name': 'some message'}) the resulting API response is {'some_field_name': [ErrorDetail(string='some message', code='invalid')]}. The expected response would be {'someFieldName': [ErrorDetail(string='some message', code='invalid')]}.

[Vitaly Babiy]

Those errors look like they are on the python side, not the JSON response. The render doesn't touch them at that point.