[neon-notifications] Releasing: digikam - 8.6.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_digikam/217/display/redirect

#<Debian::UScan::DEHS::Package:0x000070d9ae380a38 @name="digikam", @debian_uversion="8.5.0", @debian_mangled_uversion="8.5.0", @upstream_version="8.6.0", @upstream_url="https://download.kde.internal.neon.kde.org/stable/digikam/8.6.0/digiKam-8.6.0.tar.xz", @status="Newer version available">