gnome: Update minimum glib version for gdbus-codegen
gnome: Update minimum glib version for gdbus-codegen

The fix has landed upstream, and will be in the next glib stable
release. I have verified that it fixes the problem described in #3488
and that the 'frameworks/7 gnome' test passes now.

becm/meson,MathieuDuponchelle/meson,jpakkane/meson,becm/meson,becm/meson,pexip/meson,mesonbuild/meson,MathieuDuponchelle/meson,jeandet/meson,jpakkane/meson,pexip/meson,pexip/meson,mesonbuild/meson,jeandet/meson,jpakkane/meson,jpakkane/meson,thiblahute/meson,jpakkane/meson,thiblahute/meson,jeandet/meson,jeandet/meson,becm/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,thiblahute/meson,jeandet/meson,jeandet/meson,QuLogic/meson,jeandet/meson,pexip/meson,thiblahute/meson,thiblahute/meson,QuLogic/meson,thiblahute/meson,QuLogic/meson,MathieuDuponchelle/meson,mesonbuild/meson,becm/meson,jpakkane/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,QuLogic/meson,MathieuDuponchelle/meson,becm/meson,pexip/meson,MathieuDuponchelle/meson,MathieuDuponchelle/meson,jpakkane/meson,becm/meson,QuLogic/meson,mesonbuild/meson,thiblahute/meson,mesonbuild/meson,jeandet/meson,QuLogic/meson,thiblahute/meson,MathieuDuponchelle/meson,becm/meson,QuLogic/meson,jeandet/meson,becm/meson,mesonbuild/meson,MathieuDuponchelle/meson,becm/meson,thiblahute/meson,pexip/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,pexip/meson,MathieuDuponchelle/meson,QuLogic/meson