Use Python uuid.UUID instead of StrictStr (#21740)

samples/client/echo_api/python/openapi_client/api_client.py

@@ -22,6 +22,7 @@ import mimetypes
 import os
 import re
 import tempfile
+import uuid
 
 from urllib.parse import quote
 from typing import Tuple, Optional, List, Dict, Union
@@ -357,6 +358,8 @@ class ApiClient:
             return obj.get_secret_value()
         elif isinstance(obj, self.PRIMITIVE_TYPES):
             return obj
+        elif isinstance(obj, uuid.UUID):
+            return str(obj)
         elif isinstance(obj, list):
             return [
                 self.sanitize_for_serialization(sub_obj) for sub_obj in obj