pydantic cleanup

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

kittycad/models/highlight_set_entity.py

@@ -1,6 +1,6 @@
 from typing import Optional
 
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 
 
@@ -10,3 +10,5 @@ class HighlightSetEntity(BaseModel):
     entity_id: Optional[str] = None
 
     sequence: Optional[int] = None
+
+    model_config = ConfigDict(protected_namespaces=())