Update factory-boy to 2.12.0

[pyup-bot]

This PR updates factory-boy from 2.11.1 to 2.12.0.

Changelog

2.12.0

-------------------

*New:*

 - Add support for Python 3.7
 - Add support for Django 2.1
 - Add :attr:`~factory.fuzzy.FuzzyChoice.getter` to :class:`~factory.fuzzy.FuzzyChoice` that mimics
   the behavior of ``getter`` in :class:`~factory.Iterator`
 - Make the ``extra_kwargs`` parameter of :meth:`~factory.faker.Faker.generate` optional
 - Add :class:`~factory.RelatedFactoryList` class for one-to-many support, thanks `Sean Harrington <https://github.com/seanharr11>`_.
 - Make the `locale` argument for :class:`~factory.faker.Faker` keyword-only

*Bugfix:*

 - Allow renamed arguments to be optional, thanks to `Justin Crown <https://github.com/mrname>`_.
 - Fix `django_get_or_create` behavior when using multiple fields with `unique=True`, thanks to `YPCrumble <https://github.com/YPCrumble>`

Links

• PyPI: https://pypi.org/project/factory-boy
• Changelog: https://pyup.io/changelogs/factory-boy/
• Repo: https://github.com/FactoryBoy/factory_boy

[codecov]

Codecov Report

Merging #625 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #625   +/-   ##
=======================================
  Coverage   95.65%   95.65%           
=======================================
  Files          55       55           
  Lines        2856     2856           
=======================================
  Hits         2732     2732           
  Misses        124      124

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[codecov]

Codecov Report

Merging #625 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #625   +/-   ##
=======================================
  Coverage   95.65%   95.65%           
=======================================
  Files          55       55           
  Lines        2856     2856           
=======================================
  Hits         2732     2732           
  Misses        124      124

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4e4d55f...9962a83. Read the comment docs.