chore(deps): update dependency django-extensions to v3.0.4

[j0nm1]

This PR contains the following updates:

Package	Update	Change
django-extensions	patch	==3.0.3 -> ==3.0.4

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Release Notes

django-extensions/django-extensions

### [`v3.0.4`](https://togithub.com/django-extensions/django-extensions/blob/master/CHANGELOG.md#​304) [Compare Source](https://togithub.com/django-extensions/django-extensions/compare/3.0.3...3.0.4) Changes: - Various cleanups - Deprecated using `--router` instead use `--database` - Locales: Indonesian and Polish, updated - Improvement: show_dsn, fix crash with django-postgres-extra - Improvement: print_settings, added wildcard support - Improvement: print_settings, added --fail option - Improvement: delete_squashed_migrations, add --database option - Improvement: runserver_plus, added RUNSERVER_PLUS_EXTRA_FILES setting - Improvement: runserver_plus, added runserver_plus_started signal

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