[neon-notifications] Releasing: krita - 5.1.5

[Neon CI]

https://build.neon.kde.org/job/watcher_release_extras_krita/471/display/redirect

#<Debian::UScan::DEHS::Package:0x00005654da298788 @name="krita", @debian_uversion="5.1.4", @debian_mangled_uversion="5.1.4", @upstream_version="5.1.5", @upstream_url="http://download.kde.internal.neon.kde.org/stable/krita/5.1.5/krita-5.1.5.tar.gz", @status="Newer version available">