[neon-notifications] Releasing: sonnet - 5.87.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_kde_sonnet/10/display/redirect

#<Debian::UScan::DEHS::Package:0x0000558153173e58 @name="sonnet", @debian_uversion="5.86.0", @debian_mangled_uversion="5.86.0", @upstream_version="5.87.0", @upstream_url="http://download.kde.internal.neon.kde.org/stable/frameworks/5.87/sonnet-5.87.0.tar.xz", @status="Newer version available">