Qt: Update German GUI translation
Qt: Update German GUI translation

libretro/mgba,Iniquitatis/mgba,libretro/mgba,mgba-emu/mgba,libretro/mgba,Iniquitatis/mgba,mgba-emu/mgba,libretro/mgba,mgba-emu/mgba,libretro/mgba,Iniquitatis/mgba,mgba-emu/mgba,Iniquitatis/mgba