[3.11] gh-108416: Mark slow test methods with @requires_resource('cpu') (GH-108421) (GH-108799)

Only mark tests which spend significant system or user time,
by itself or in subprocesses.
(cherry picked from commit f3ba0a74cd)

Lib/test/test_unicodedata.py

@@ -295,6 +295,7 @@ class UnicodeMiscTest(UnicodeDatabaseTest):
         self.assertTrue("\u1d79".upper()=='\ua77d')
         self.assertTrue(".".upper()=='.')
 
+    @requires_resource('cpu')
     def test_bug_5828(self):
         self.assertEqual("\u1d79".lower(), "\u1d79")
         # Only U+0000 should have U+0000 as its upper/lower/titlecase variant
@@ -335,6 +336,7 @@ class NormalizationTest(unittest.TestCase):
         return "".join([chr(x) for x in data])
 
     @requires_resource('network')
+    @requires_resource('cpu')
     def test_normalization(self):
         TESTDATAFILE = "NormalizationTest.txt"
         TESTDATAURL = f"http://www.pythontest.net/unicode/{unicodedata.unidata_version}/{TESTDATAFILE}"