wayland-fits: update, get out of PNBLACKLIST

Update to latest version, which has fixes for building with
Weston >= 1.8.91, and thus builds with branches >= Jethro.

Signed-off-by: Manuel Bachmann <mbc@iot.bzh>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>