python3Packages.icalendar: disable failing tests

Changed files
+2
pkgs
development
python-modules
icalendar
+2
pkgs/development/python-modules/icalendar/default.nix
···
# AssertionError: assert {'Atlantic/Jan_Mayen'} == {'Arctic/Longyearbyen'}
"test_dateutil_timezone_is_matched_with_tzname"
"test_docstring_of_python_file"
+
# AssertionError: assert $TZ not in set()
+
"test_add_missing_timezones_to_example"
];
enabledTestPaths = [ "src/icalendar" ];