graphics/waifu2x-converter-cpp: update to 5.3.3
- Switch to maintained upstream
Changes: https://github.com/DeadSix27/waifu2x-converter-cpp/compare/tanakamura:5e5ac35...DeadSix27:v5.3.3
Changes: https://github.com/DeadSix27/waifu2x-converter-cpp/releases