[neon-notifications] Dev Required: fastfloat - 8.2.3

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_fastfloat/478/display/redirect

#<Debian::UScan::DEHS::Package:0x0000766c75f04508 @name="fastfloat", @debian_uversion="6.1.6", @debian_mangled_uversion="6.1.6", @upstream_version="8.2.3", @upstream_url="https://github.com/fastfloat/fast_float/archive/refs/tags/v8.2.3.tar.gz", @status="Newer version available">