bpo-40275: Use new test.support helper submodules in tests (GH-21314)

diff --git a/Lib/test/test_uuid.py b/Lib/test/test_uuid.py
index b1c9242..718113d 100644
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -1,5 +1,6 @@
 import unittest
 from test import support
+from test.support import import_helper
 import builtins
 import contextlib
 import copy
@@ -10,8 +11,8 @@
 import weakref
 from unittest import mock
 
-py_uuid = support.import_fresh_module('uuid', blocked=['_uuid'])
-c_uuid = support.import_fresh_module('uuid', fresh=['_uuid'])
+py_uuid = import_helper.import_fresh_module('uuid', blocked=['_uuid'])
+c_uuid = import_helper.import_fresh_module('uuid', fresh=['_uuid'])
 
 def importable(name):
     try: