[debian-mysql] Bug#1104533: debian-start: ERROR 1267 (HY000): Illegal mix of collations

[Otto Kekäläinen]

Control: forwarded -1 https://jira.mariadb.org/browse/MDEV-36815

I saw this also upstream at https://jira.mariadb.org/browse/MDEV-36815
and in StackExchange at
https://dba.stackexchange.com/questions/345906/upgrading-from-mariadb-10-11-8-to-11-4-5-gives-warning-about-error-1267-illegal

Presumably a lot of people are running into this. I don't know what is
the fix and I don't fully understand why system tables are affected by
what charset the client is using.