Update png_archive to latest version in 1.2.x branch
Update png_archive to latest version in 1.2.x branch

Contain security fix only so nothing should break.Would you consider upgrading to 1.6.x later on?

More info : https://sourceforge.net/p/libpng/news/
dloeng/guetzli,szabadka/guetzli,google/guetzli,guanzidashu/guetzli_ios_metal,google/guetzli,dloeng/guetzli,szabadka/guetzli,guanzidashu/guetzli_ios_metal,ianhuang-777/guetzli,guanzidashu/guetzli_ios_metal,google/guetzli,ianhuang-777/guetzli,ianhuang-777/guetzli,szabadka/guetzli,guanzidashu/guetzli_ios_metal,dloeng/guetzli,ianhuang-777/guetzli,google/guetzli