[neon-notifications] Releasing: haruna - 0.7.3

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_haruna/42/display/redirect

#<Debian::UScan::DEHS::Package:0x00005587d3fb8ed8 @name="haruna", @debian_uversion="0.7.2", @debian_mangled_uversion="0.7.2", @upstream_version="0.7.3", @upstream_url="https://download.kde.internal.neon.kde.org/stable/haruna/haruna-0.7.3.tar.xz", @status="Newer version available">