datetime: Skip tests that require the host to be in UTC timezone.

Signed-off-by: Damien George <damien@micropython.org>

python-stdlib/datetime/test_datetime.py

@@ -2082,9 +2082,11 @@ class Test5DateTime(unittest.TestCase):
         with LocalTz("Europe/Rome"):
             self.assertEqual(dt1.timetuple()[:8], (2002, 1, 31, 0, 0, 0, 3, 31))
 
+    @unittest.skip("broken when running with non-UTC timezone")
     def test_timetuple01(self):
         self.assertEqual(dt27tz2.timetuple()[:8], (2010, 3, 27, 12, 0, 0, 5, 86))
 
+    @unittest.skip("broken when running with non-UTC timezone")
     def test_timetuple02(self):
         self.assertEqual(dt28tz2.timetuple()[:8], (2010, 3, 28, 12, 0, 0, 6, 87))