kde-gtk-config was missing merges from 5.12 and 5.13 branch which includes many updates. I have made a new tar with these merges now in Plasma/5.14 branch
kde-gtk-config;Plasma/5.14;74e631cb980857b13bf41060f3957c201223120e;kde-gtk-config-5.13.90a.tar.xz;b0539f3cd8e9d0340e9356de236429ca4000baad2d3bf3105fcd46bd55a78ff5
