gh-108416: Mark slow test methods with @requires_resource('cpu') (GH-108421)

Only mark tests which spend significant system or user time,
by itself or in subprocesses.

Lib/test/test_compile.py

@@ -784,6 +784,7 @@ class TestSpecifics(unittest.TestCase):
         # An implicit test for PyUnicode_FSDecoder().
         compile("42", FakePath("test_compile_pathlike"), "single")
 
+    @support.requires_resource('cpu')
     def test_stack_overflow(self):
         # bpo-31113: Stack overflow when compile a long sequence of
         # complex statements.