[neon-notifications] Dev Required: keyman - 17.0.308

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_keyman-ubuntu/3/display/redirect

#<Debian::UScan::DEHS::Package:0x0000563287d4d9a0 @name="keyman", @debian_uversion="17.0.295", @debian_mangled_uversion="17.0.295", @upstream_version="17.0.308", @upstream_url="https://downloads.keyman.com/linux/beta/17.0.308/keyman-17.0.308.tar.gz", @status="Newer version available">