Request: resolving `RemovedInDjango41Warning` for `default_app_config`

[jamesbraza]

Running with v2.1.3, the below Django deprecation warning pops up:

  /usr/local/lib/python3.10/site-packages/django/apps/registry.py:91: RemovedInDjango41Warning:

  'dynamic_rest' defines default_app_config = 'dynamic_rest.apps.DynamicRestConfig'. Django now detects this configuration automatically. You can remove default_app_config.

This deprecation warning comes from https://github.com/AltSchool/dynamic-rest/blob/v2.1.3/dynamic_rest/__init__.py#L12

The request is to resolve this deprecation warning