pydantic cleanup

Signed-off-by: Jess Frazelle <github@jessfraz.com>

kittycad/models/extended_user.py

@@ -1,7 +1,7 @@
 import datetime
 from typing import Optional
 
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 from ..models.block_reason import BlockReason
 from ..models.uuid import Uuid
@@ -46,3 +46,5 @@ class ExtendedUser(BaseModel):
     stripe_id: Optional[str] = None
 
     updated_at: datetime.datetime
+
+    model_config = ConfigDict(protected_namespaces=())