pydantic cleanup

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

kittycad/models/plane_intersect_and_project.py

@@ -1,6 +1,6 @@
 from typing import Optional
 
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 from ..models.point2d import Point2d
 
@@ -9,3 +9,5 @@ class PlaneIntersectAndProject(BaseModel):
     """Corresponding coordinates of given window coordinates, intersected on given plane."""
 
     plane_coordinates: Optional[Point2d] = None
+
+    model_config = ConfigDict(protected_namespaces=())