meson: Bump required version
This avoids
WARNING: Project targetting '>= 0.40.1' but tried to use feature introduced in '0.42.0': gnome.mkenums_simple
0.42 is fairly old already and 0.40 isn't in a stable Debian release either.
This avoids
WARNING: Project targetting '>= 0.40.1' but tried to use feature introduced in '0.42.0': gnome.mkenums_simple
0.42 is fairly old already and 0.40 isn't in a stable Debian release either.