Drop marshmallow_enum dependency

[deuxnids]

Hello,

With the release of marshmallow 3.18.0 the Enum type is supported (https://github.com/marshmallow-code/marshmallow/blob/dev/CHANGELOG.rst#3180-2022-09-15). The repository for marshmallow_enum will be closed (justanr/marshmallow_enum#51).

It would be nice to remove the dependency to marshmallow_enum in https://github.com/lidatong/dataclasses-json/blob/master/setup.py#L21, since marshmallow_enum still depends on 'marshmallow>=2.0.0' which suffers from CVE-2018-17175 vulnerability.

What do you think?

[baldurmen]

I'm also keen for this to happen, as this would let me drop the python-marshmallow-enum package I maintain in Debian for the sole purpose of packaging dataclasses-json :)