[neon-notifications] plasma-nano new version 5.18.1

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_plasma-nano/10/display/redirect

#<Debian::UScan::DEHS::Package:0x000055ade473c4a8 @name="plasma-nano", @debian_uversion="5.18.0", @debian_mangled_uversion="5.18.0", @upstream_version="5.18.1", @upstream_url="https://download.kde.internal.neon.kde.org/stable/plasma/5.18.1/plasma-nano-5.18.1.tar.xz", @status="Newer version available">