[neon-notifications] plasma-nano new version 5.18.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_plasma-nano/1/display/redirect

#<Debian::UScan::DEHS::Package:0x00005576caac46a8 @name="plasma-nano", @debian_uversion="0.0", @debian_mangled_uversion="0.0", @upstream_version="5.18.0", @upstream_url="https://download.kde.internal.neon.kde.org/stable/plasma/5.18.0/plasma-nano-5.18.0.tar.xz", @status="Newer version available">