fix(dgsi/models): Import from the original source

src/dgsi/models.py

@@ -3,6 +3,7 @@ from dataclasses import dataclass
 from functools import cached_property
 from typing import Optional, Self
 
+from aiohttp.client_exceptions import ClientConnectorError
 from allauth.socialaccount.models import SocialAccount
 from asgiref.sync import async_to_sync
 from django.contrib.auth.models import AbstractUser
@@ -13,7 +14,6 @@ from django.http import HttpRequest
 from django.utils.translation import gettext_lazy as _
 from kanidm.exceptions import NoMatchingEntries
 from kanidm.models.person import Person
-from kanidm.radius import ClientConnectorError
 
 from shared.kanidm import klient