pythongh-115142: Skip test_capi.test_dict.py if _testcapi and _testlimitedcapi are not available (pythonGH-117588)

pythongh-115142: Skip test_dict if _testcapi and _testlimitedcapi is not available

Author: Eclips4

Lib/test/test_capi/test_dict.py

@@ -2,8 +2,11 @@
 from collections import OrderedDict, UserDict
 from types import MappingProxyType
 from test import support
-import _testcapi
-import _testlimitedcapi
+from test.support import import_helper
+
+
+_testcapi = import_helper.import_module("_testcapi")
+_testlimitedcapi = import_helper.import_module("_testlimitedcapi")
 
 
 NULL = None