mysql complains about timezone

[msalle]

I just updated my voms packages to the latest from
https://repo.cloud.cnaf.infn.it/repository/voms-rpm-stable/centos7/
and ran into a problem with the mysql connector:
java.sql.SQLException: The server time zone value 'CEST' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
(from the /var/log/voms-admin/voms-admin-<MYVO>.log file).

From e.g. https://stackoverflow.com/q/37719818, in particular https://stackoverflow.com/a/54256150 I just added ?serverTimezone=Europe/Amsterdam to the
hibernate.connection.url=jdbc:mysql://localhost:3306/voms_<MYVO>
line in /etc/voms-admin/<MYVO>/database.properties
which solves the issue.

This is an up-to-date CentOS7.9 with mariadb-server-5.5.68-1.el7 and voms-admin-server-3.8.1-1.el7

I'm not sure if this is a misconfiguration from our side but don't fully understand why we didn't see this before.