Added support for django's builtin bulk_update method if present

[balaji-dr]

Fix for using django's builtin bulk_update method if available Link for the issue

Todos

• [x] Tests
• [x] Documentation
• [x] Changelog

[caioariede]

That's awesome, thanks @deeaarbee :) The coverage is failing for other reasons as far as I can tell.

Can you please just add a new bullet under the master section in the CHANGELOG?

https://github.com/Tesorio/django-anon/blob/master/CHANGELOG.rst#master

Thanks again!

[balaji-dr]

Thanks for the review!. I have added the changelog for the PR.

[caioariede]

@deeaarbee thank you for your contribution 🙏