Prefer T | None over Optional[T]

This follows the style guide at
https://typing.readthedocs.io/en/latest/source/best_practices.html#shorthand-syntax.

lms/services/canvas_studio.py

@@ -1,4 +1,4 @@
-from typing import Literal, Optional, TypedDict
+from typing import Literal, TypedDict
 from urllib.parse import urlencode, urlunparse
 
 from marshmallow import EXCLUDE, Schema, fields, post_load
@@ -61,7 +61,7 @@ class File(TypedDict):
     display_name: str
     updated_at: str
 
-    contents: Optional[APICallInfo]
+    contents: APICallInfo | None
     """API call to use to fetch contents of a folder."""
 
 

lms/services/exceptions.py

@@ -1,5 +1,3 @@
-from typing import Optional
-
 from lms.models.oauth2_token import Service
 
 
@@ -48,8 +46,8 @@ def __init__(
         response=None,
         validation_errors=None,
         refreshable=False,
-        refresh_route: Optional[str] = None,
-        refresh_service: Optional[Service] = None,
+        refresh_route: str | None = None,
+        refresh_service: Service | None = None,
     ):  # pylint: disable=too-many-arguments
         super().__init__()
         self.message = message