Use RedirectURLMixin replacing SuccessURLAllowedHostsMixin

This also bumps Django to 4.1 because this undocumented API was
changed in a minor release…

aleksis/core/mixins.py

@@ -6,7 +6,7 @@ from typing import Any, Callable, List, Optional, Union
 
 from django.conf import settings
 from django.contrib import messages
-from django.contrib.auth.views import LoginView, SuccessURLAllowedHostsMixin
+from django.contrib.auth.views import LoginView, RedirectURLMixin
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.sites.managers import CurrentSiteManager
 from django.contrib.sites.models import Site
@@ -465,7 +465,7 @@ class SuccessMessageMixin(ModelFormMixin):
         return super().form_valid(form)
 
 
-class SuccessNextMixin(SuccessURLAllowedHostsMixin):
+class SuccessNextMixin(RedirectURLMixin):
     redirect_field_name = "next"
 
     def get_success_url(self) -> str:

pyproject.toml

@@ -56,7 +56,7 @@ secondary = true
 
 [tool.poetry.dependencies]
 python = "^3.9"
-Django = "^4.0"
+Django = "^4.1"
 django-any-js = "^1.1"
 django-menu-generator-ng = "^1.2.3"
 django-tables2 = "^2.1"