fixup! Fix `NoneType` return type for 204 endpoints

fastapi/dependencies/utils.py

@@ -17,6 +17,7 @@ from typing import (
     Union,
     cast,
 )
+import types
 
 import anyio
 from fastapi import params
@@ -278,7 +279,7 @@ def get_typed_return_annotation(call: Callable[..., Any]) -> Any:
     globalns = getattr(call, "__globals__", {})
     typed_annotation = get_typed_annotation(annotation, globalns)
 
-    if typed_annotation is type(None):
+    if typed_annotation is types.NoneType:
         return None
 
     return typed_annotation