This bug was fixed in the package django-mailman3 - 1.3.9-1ubuntu3
--------------- django-mailman3 (1.3.9-1ubuntu3) mantic; urgency=medium
* d/p/use-non-legacy-timezone-in-tests.patch: Use America/Chicago timezone in upstream test suite to fix failure from removal of legacy timezones as a part of python-tz 2023.3-4 (LP: #2037563).
-- Lena Voytek <email address hidden> Wed, 20 Sep 2023 09:37:21 -0700
This bug was fixed in the package django-mailman3 - 1.3.9-1ubuntu3
---------------
django-mailman3 (1.3.9-1ubuntu3) mantic; urgency=medium
* d/p/use- non-legacy- timezone- in-tests. patch: Use America/Chicago timezone
in upstream test suite to fix failure from removal of legacy timezones as
a part of python-tz 2023.3-4 (LP: #2037563).
-- Lena Voytek <email address hidden> Wed, 20 Sep 2023 09:37:21 -0700