Django-scim2

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- Allow sorting via get_queryset_post_processor.
- Drop USE_L10N setting.
- Switch to poetry-core.

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- Add ability to override the Django User model used to look up a given User
object.
- Update scim2_filter_parser to 0.5.0.

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- `SCIMAuthCheckMiddleware` is now applied as a decorator directly to
the SCIM view functions. Therefore, it no longer needs to be
configured as a middleware in Django's `MIDDLEWARE` setting. If you
want to customize it, you can do so using the
`AUTH_CHECK_MIDDLEWARE` key of the `SCIM_SERVICE_PROVIDER` setting.
- Escape URL regexes so as not to match all characters in place of the
period in `.search`.

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- Update build-system from poetry to poetry-core
- Update Django dependency from 3.2.12 to 3.2.13
- Change scim2-filter-parser pin to lower bound

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- Update tests to support Django4.0
- Replace ugettext_lazy with gettext_lazy

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- Update docs to include information for available settings.
- Add a setting for exposing SCIM errors to clients, `EXPOSE_SCIM_EXCEPTIONS`.
This setting defaults to false for security but can be toggled on for
backwards compatibility.