Bug#1037956: mailman3-web: SQL Syntax error installing mailman3-web on mariadb - more fixes

[Falk Hackenberger]

after some trial by error here my thing: i have done until now to get 
mailman3-web running on debian12 with mariadb:

add   'charset': 'utf8mb4' to database options in 
/etc/mailman3/mailman-web.py:

add this patch:

https://gitlab.com/mailman/mailman-suite/-/commit/7f5dfd4992d4c454327233453608fc5f42ca29b6

to /usr/share/mailman3-web/settings.py

add DEFAULT_AUTO_FIELD = 'django.db.models.AutoField' to 
/usr/share/mailman3-web/settings.py