update Fedora packages to v2.4
Phodav, chezdav and spice-webdavd are still on v2.3 which is more than a year old now and v2.4 includes several important fixes.
Most notably, v2.4 includes the fix for #5 (closed) and with spice-webdavd, unlike chezdav, you can't use the
--public option. This means that you cannot mount
Spice client folder through Nautilus (you have to manually mount