fix future deprecate warning of django.utils.timezone.utc

[jairhenrique]

Describe the change
Make code compatible with future Django release.

model_bakery/timezone.py:6: RemovedInDjango50Warning: The django.utils.timezone.utc alias is deprecated. Please update your code to use datetime.timezone.utc instead.
    from django.utils.timezone import utc

PR Checklist

• Change is covered with tests
• CHANGELOG.md is updated

[amureki]

Nice deprecation clean-up @jairhenrique ! Thanks for the efforts. :)

[berinhard]

Thanks for your contribution @jairhenrique 👍

[marcgibbons]

@berinhard @amureki Any chance this can be released to PyPI?

[amureki]

@berinhard @amureki Any chance this can be released to PyPI?

Good point, thanks for mentioning that! 👍

https://pypi.org/project/model-bakery/1.7.1/ is out

[marcgibbons]

@amureki Thank you!