Update api spec (#300)

* YOYO NEW API SPEC!

* I have generated the latest API!

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

kittycad/models/org.py

@@ -12,7 +12,7 @@ class Org(BaseModel):
 
     allow_users_in_domain_to_auto_join: Optional[bool] = None
 
-    billing_email: Optional[str] = None
+    billing_email: str
 
     billing_email_verified: Optional[datetime.datetime] = None
 

spec.json

@@ -26920,6 +26920,7 @@
           }
         },
         "required": [
+          "billing_email",
           "created_at",
           "id",
           "updated_at"