pydantic cleanup

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

kittycad/models/export.py

@@ -1,6 +1,6 @@
 from typing import List
 
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 from ..models.export_file import ExportFile
 
@@ -9,3 +9,5 @@ class Export(BaseModel):
     """The response from the `Export` endpoint."""
 
     files: List[ExportFile]
+
+    model_config = ConfigDict(protected_namespaces=())