[neon-notifications] Dev Required: appstream - 1.0.3

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_appstream-jammy2/640/display/redirect

#<Debian::UScan::DEHS::Package:0x00007fd94c0ee9f8 @name="appstream", @debian_uversion="1.0.2", @debian_mangled_uversion="1.0.2", @upstream_version="1.0.3", @upstream_url="https://www.freedesktop.org/software/appstream/releases/AppStream-1.0.3.tar.xz", @status="Newer version available">