[neon-notifications] Dev Required: libquotient - 0.6.6

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_libquotient/95/display/redirect

#<Debian::UScan::DEHS::Package:0x0000555652fbf308 @name="libquotient", @debian_uversion="0.6.5", @debian_mangled_uversion="0.6.5", @upstream_version="0.6.6", @upstream_url="https://github.com/quotient-im/libQuotient/archive/0.6.6.tar.gz", @status="Newer version available">