dovecot23 from home:13ilya project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:13ilya/openSUSE_Tumbleweed/home:13ilya.repo
zypper refresh
zypper install dovecot23

For 16.0 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:13ilya/16.0/home:13ilya.repo
zypper refresh
zypper install dovecot23