Fix mypy

Author: luolingchun

flask_openapi3/request.py

@@ -9,7 +9,7 @@
 try:
     from types import UnionType  # Python 3.10+
 except ImportError:
-    UnionType = type(Union)
+    UnionType = type(Union)  # type: ignore
 
 from flask import request, current_app, abort
 from pydantic import ValidationError, BaseModel, RootModel

flask_openapi3/utils.py

@@ -13,7 +13,7 @@
 try:
     from types import UnionType  # Python 3.10+
 except ImportError:
-    UnionType = type(Union)
+    UnionType = type(Union)  # type: ignore
 
 from flask import make_response, current_app
 from flask.wrappers import Response as FlaskResponse