[neon-notifications] falkon new version 3.1.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_falkon/378/display/redirect

#<Debian::UScan::DEHS::Package:0x0000563b8932be80 @name="falkon", @debian_uversion="3.0.1", @debian_mangled_uversion="3.0.1", @upstream_version="3.1.0", @upstream_url="http://download.kde.internal.neon.kde.org/stable/falkon/3.1/falkon-3.1.0.tar.xz", @status="Newer version available">