add allauth middleware to test settings

The django-allauth package since 0.56¹ requires setting up its
middleware in settings.

The same issue² was fixed in dj-rest-auth 5.0.2.

[1] https://github.com/pennersr/django-allauth/blob/main/ChangeLog.rst#backwards-incompatible-changes-1
[2] iMerica/dj-rest-auth#561

requirements/optionals.txt

@@ -1,6 +1,6 @@
-django-allauth<0.55.0  # breaking change breaking dj-rest-auth
+django-allauth>=0.56.0
 drf-jwt>=0.13.0
-dj-rest-auth>=1.0.0
+dj-rest-auth>=5.0.2
 djangorestframework-simplejwt>=4.4.0
 django-polymorphic>=2.1
 django-rest-polymorphic>=0.1.8

tests/conftest.py

@@ -70,6 +70,7 @@ def pytest_configure(config):
             'django.middleware.common.CommonMiddleware',
             'django.contrib.auth.middleware.AuthenticationMiddleware',
             'django.middleware.locale.LocaleMiddleware',
+            'allauth.account.middleware.AccountMiddleware',
         ),
         INSTALLED_APPS=(
             'django.contrib.auth',