Bump django-extensions from 2.1.9 to 2.2.1
Bump django-extensions from 2.1.9 to 2.2.1

Bumps [django-extensions](https://github.com/django-extensions/django-extensions) from 2.1.9 to 2.2.1.
- [Release notes](https://github.com/django-extensions/django-extensions/releases)
- [Changelog](https://github.com/django-extensions/django-extensions/blob/master/CHANGELOG.md)
- [Commits](https://github.com/django-extensions/django-extensions/compare/2.1.9...2.2.1)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
mozilla/addons-server,wagnerand/addons-server,bqbn/addons-server,mozilla/addons-server,diox/olympia,mozilla/olympia,psiinon/addons-server,eviljeff/olympia,psiinon/addons-server,eviljeff/olympia,bqbn/addons-server,mozilla/olympia,eviljeff/olympia,psiinon/addons-server,wagnerand/addons-server,bqbn/addons-server,bqbn/addons-server,psiinon/addons-server,wagnerand/addons-server,diox/olympia,eviljeff/olympia,diox/olympia,mozilla/olympia,mozilla/addons-server,mozilla/olympia,diox/olympia,wagnerand/addons-server,mozilla/addons-server