Update Lib/test/test_str.py

Co-authored-by: Stan Ulbrych <stan@python.org>

Author: sobolevn

Lib/test/test_str.py

@@ -609,6 +609,7 @@ def test_replace_id(self):
 
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, reason="_testcapi is required for this test")
+    @unittest.skipIf(support.Py_TRACE_REFS, 'cannot test Py_TRACE_REFS build')
     def test_replace_oom(self):
         # https://github.com/python/cpython/issues/152228
         s1 = "轘" * 4