[neon-notifications] Releasing: kiten - 20.12.3

[Neon CI]

https://build.neon.kde.org/job/watcher_release_kde_kiten/1069/display/redirect

#<Debian::UScan::DEHS::Package:0x0000557a518f7020 @name="kiten", @debian_uversion="20.12.2", @debian_mangled_uversion="20.12.2", @upstream_version="20.12.3", @upstream_url="http://download.kde.internal.neon.kde.org/stable/release-service/20.12.3/src/kiten-20.12.3.tar.xz", @status="Newer version available">