[neon-notifications] Dev Required: libxmlb - 0.3.14

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_libxmlb/8/display/redirect

#<Debian::UScan::DEHS::Package:0x000055b4b53e9120 @name="libxmlb", @debian_uversion="0.3.13", @debian_mangled_uversion="0.3.13", @upstream_version="0.3.14", @upstream_url="https://github.com/hughsie/libxmlb/archive/refs/tags/0.3.14.tar.gz", @status="Newer version available">