[neon-notifications] Dev Required: packagekit - 1.2.8

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_packagekit/169/display/redirect

#<Debian::UScan::DEHS::Package:0x00005654ddeb8e98 @name="packagekit", @debian_uversion="1.2.7", @debian_mangled_uversion="1.2.7", @upstream_version="1.2.8", @upstream_url="https://www.freedesktop.org/software/PackageKit/releases/PackageKit-1.2.8.tar.xz", @status="Newer version available">