Fails to import as dateutil is not listed as requirement

[fsiola]

Describe the bug
dateutil is used at https://github.com/marcosschroh/dataclasses-avroschema/blob/master/dataclasses_avroschema/dacite_config.py#L7 but is not listed as dependency.

The library them fails to load with ModuleNotFoundError: No module named 'dateutil'

To Reproduce

python -m venv .venv
source .venv/bin/activate
pip install dataclasses-avroschema==0.60.0

from dataclasses_avroschema import AvroModel

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File ".../dataclasses_avroschema/__init__.py", line 1, in <module>
    from .schema_generator import AvroModel  # noqa: F401 I001
  File ".../dataclasses_avroschema/schema_generator.py", line 11, in <module>
    from .dacite_config import generate_dacite_config
  File ".../dataclasses_avroschema/dacite_config.py", line 7, in <module>
    from dateutil import parser
ModuleNotFoundError: No module named 'dateutil'

Expected behavior
Library imports correctly

[marcosschroh]

Ups! I forgot to included yesterday in the PR. I guess the tests passed because I installed the library with all the extra dependencies and dateutil might be included on one of them. Thanks for reporting it !