Update factory-boy requirement from ==2.11.* to ==2.12.* (#356)
Update factory-boy requirement from ==2.11.* to ==2.12.* (#356)

Updates the requirements on [factory-boy](https://github.com/FactoryBoy/factory_boy) to permit the latest version.
- [Release notes](https://github.com/FactoryBoy/factory_boy/releases)
- [Changelog](https://github.com/FactoryBoy/factory_boy/blob/master/docs/changelog.rst)
- [Commits](https://github.com/FactoryBoy/factory_boy/compare/2.11.0...2.12.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sanoma/django-arctic,sanoma/django-arctic,sanoma/django-arctic