add missing model

InvenTree/users/models.py

@@ -226,6 +226,7 @@ class RuleSet(models.Model):
                 'otp_totp_totpdevice',
                 'otp_static_statictoken',
                 'otp_static_staticdevice',
+                'mfa_authenticator',
                 'plugin_pluginconfig',
                 'plugin_pluginsetting',
                 'plugin_notificationusersetting',