manifest: Build webkit 2.4.6, 2.4.4 doesnt exist anymore
manifest: Build webkit 2.4.6, 2.4.4 doesnt exist anymore

Reported-by: James Thomas <474ba67bdb289c6263b36dfd8a7bed6c85b04943@seriousinternetbusiness.com>

chergert/gnome-continuous,chergert/gnome-continuous,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io