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.
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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.