[neon-notifications] Dev Required: mold - 2.4.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_mold/47/display/redirect

#<Debian::UScan::DEHS::Package:0x0000559208591448 @name="mold", @debian_uversion="2.3.1+dfsg", @debian_mangled_uversion="2.3.1", @upstream_version="2.4.0", @upstream_url="https://github.com/rui314/mold/archive/refs/tags/v2.4.0.tar.gz", @status="Newer version available">