test_timezone: Ignore legacy MET, MEST aliases.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

zerver/tests/test_timezone.py

@@ -35,6 +35,7 @@ class TimeZoneTest(ZulipTestCase):
             datetime(now.year, 12, 21, tzinfo=timezone.utc),
         ]
         extra = {*common_timezones.items(), *ambiguous_abbrevs}
+        extra -= {("MET", +3600), ("MEST", +7200)}  # Removed in tzdata 2024b
         for name in zoneinfo.available_timezones():
             tz = zoneinfo.ZoneInfo(name)
             for date in dates: