The debian/rules removed sufficient version information from the
downstream version, however the mariadb upstream has a +
separator from the suffix.

While we are at it, remove the Debian/Ubuntu revision -1.

Other revisions used:
* Debian unstable (inherited to both Debian and Ubuntu if package unchanged): 1:10.11.6-2
* Ubuntu stable updates example: 1:10.11.6-0ubuntu0.23.10.2
* Debian stable updates example: 1:10.11.4-1~deb12u1

The result is compulation with:
    -DMYSQL_SERVER_SUFFIX="-1:10.4.34+maria~deb10" \

Compared to Debian:
    -DMYSQL_SERVER_SUFFIX="-1~deb12u1" \

The impact comes into play with SELECT VERSION():
    10.4.34-MariaDB-1:10.4.34+maria~deb10

A more abbreviated form of the following is much more human/machine parsable:
    10.6.16-MariaDB~ubu2004

Reviewer: Otto Kekäläinen