fix(api/users): small naming typo

src/backend/api/v1/users/endpoints.py

@@ -119,7 +119,7 @@ def delete_user(
 ) -> tuple[HTTPStatus, None]:
     user = get_object_or_404(User, pk=user_id)
 
-    current_user = request.user
+    current_user = request.auth
     if str(user.pk) == str(current_user.pk):
         raise ValidationError({"user": "You cannot delete your own account."})
 
@@ -142,7 +142,7 @@ def assign_role(
 ) -> tuple[HTTPStatus, UserOut]:
     user = get_object_or_404(User, pk=user_id)
 
-    current_user = request.user
+    current_user = request.auth
     if str(user.pk) == str(current_user.pk):
         raise ValidationError({"user": "You cannot change your own role."})