Disable the 'mysql*' command deprecation warning

Disable the 'mysql*' command deprecation warning

Many command-line tools expect the commands they run to return without
any output in stderr or having error codes. The fact that now in MariaDB
11.4 all 'mysql*' commands emit a deprecation warning causes a lot of
scripts to fail, such as the /etc/init.d/mariadb itself and many dependent
programs as witnessed via Debian autopkgtests. See examples below.

https://ci.debian.net/packages/m/mariadb-connector-odbc/testing/amd64/48373500/
https://ci.debian.net/packages/p/pam-mysql/testing/amd64/48373511/
https://ci.debian.net/packages/r/roundcube/testing/amd64/48373518/

Forwarded: not-needed

Gbp-Pq: Name hide-mysql-command-deprecation-warnings.patch