[neon-notifications] Dev Required: libxisf - 0.2.6

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_libxisf/58/display/redirect

#<Debian::UScan::DEHS::Package:0x000055fd56f44968 @name="libxisf", @debian_uversion="0.2.5", @debian_mangled_uversion="0.2.5", @upstream_version="0.2.6", @upstream_url="https://gitea.nouspiro.space/nou/libXISF/archive/v0.2.6.tar.gz", @status="Newer version available">