Replace deprecated `django.utils.six` module with `six` library

[bartmika]

I upgrade Django to version 3 and this library creates the following error:

ImportError: Could not import 'rest_framework_msgpack.parsers.MessagePackParser' for API setting 'DEFAULT_PARSER_CLASSES'. ModuleNotFoundError: No module named 'django.utils.six'.

Having investigated this issue, the problem is here: https://github.com/juanriaza/django-rest-framework-msgpack/blob/96f09b36174c7c541d041b18bb020abc8f145aa9/rest_framework_msgpack/parsers.py#L4

May you please change django.utils.six module with six library to fix this issue?

Thank you!

[rodolfomartinez]

+1

[artel1992]

+1

[johnanthonyjose]

+1

[juby-gif]

+1

[DavidTF85]

+1

[killswitch-GUI]

+1