[neon-notifications] Releasing: labplot - 2.12.1

[Neon CI]

https://build.neon.kde.org/job/watcher_release_extras_labplot/363/display/redirect

#<Debian::UScan::DEHS::Package:0x000073a284f6ff50 @name="labplot", @debian_uversion="2.12.0", @debian_mangled_uversion="2.12.0", @upstream_version="2.12.1", @upstream_url="https://download.kde.internal.neon.kde.org/stable/labplot/labplot-2.12.1.tar.xz", @status="Newer version available">