Fix test that fails on specific macos

Author: Tattoo

tests/utest/robot_interface/test_time_conversions.py

@@ -34,7 +34,10 @@ def _validate_timestamp(self, result):
         expected = '19700101 00:00:00.990000'
         import platform
         # Particular Windows 10 calculates epoch differently ( T ʖ̯ T)
-        if platform.system() == 'Windows' and platform.version() == '10.0.19044':
+        if ((platform.system() == 'Windows' and
+             platform.version() == '10.0.19044') or
+            (platform.system() == 'Darwin'and
+             platform.release() == '21.6.0')):
             expected = '19700101 02:00:00.990000'
 
         self.assertEqual(timestamp, expected)