pytest-postgresql 3.1.3 and pytest-redis 2.4.0 added support for
pytest >= 7 so we can now drop the pytest pinning.

This reverts commit 4083f796.

There is an incompatibility between latest django-stubs release (1.10.0)
and current release of djangorestframework-stubs.

So temporarily pin django-stubs to < 1.10.0 until the issue is fixed.

Related to T3916

Add keycloak_oidc_client factory to instantiate KeycloakOpenIDConnect
class from the following django settings:

  - KEYCLOAK_SERVER_URL
  - KEYCLOAK_REALM_NAME
  - KEYCLOAK_CLIENT_ID

This is required before moving the generic django OIDC auth backends
from swh-web to swh-auth.

Use django stubs for mypy to remove the following error in models.py:
"Need type annotation for 'url'".

That class is a custom User proxy model for remote users storing OpenID Connect related
data (profile containing authentication tokens, ...).

The model is also not saved to database as all users are already stored in the Keycloak
one.

That class will be used for example by both the webapp and the deposit.

Related to T3079

Related to T3079