[neon-notifications] Dev Required: meson - 1.6.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_meson-jammy/78/display/redirect

#<Debian::UScan::DEHS::Package:0x00007f2b78f4c270 @name="meson", @debian_uversion="1.4.0", @debian_mangled_uversion="1.4.0", @upstream_version="1.6.0", @upstream_url="https://github.com/mesonbuild/meson/archive/refs/tags/1.6.0.tar.gz", @status="Newer version available">