[neon-notifications] Releasing: kholidays - 5.87.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_kde_kholidays/11/display/redirect

#<Debian::UScan::DEHS::Package:0x000055ea99554248 @name="kholidays", @debian_uversion="5.86.0", @debian_mangled_uversion="5.86.0", @upstream_version="5.87.0", @upstream_url="https://download.kde.internal.neon.kde.org/stable/frameworks/5.87/kholidays-5.87.0.tar.xz", @status="Newer version available">