fix - replace BaseModel -> AbstrasctUser (MRO)

apps/authentication/models.py

@@ -2,18 +2,11 @@ from django.contrib.auth.models import (
     AbstractUser
 )
 from django.db import models
-from django.utils.translation import gettext_lazy as _
 
 from apps.core.models import BaseModel
 
 
-class User(AbstractUser, BaseModel):
-    username = models.CharField(
-        max_length=150,
-        help_text=_(
-            "Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only."
-        ),
-    )
+class User(BaseModel, AbstractUser):
     mobile = models.CharField(max_length=18, null=True)
     phone = models.CharField(max_length=18, null=True)
     national_code = models.CharField(max_length=16, null=True)