loongson/mirror: links for fpng-py-fix

loongson/mirror fpng_py_fix-0.0.3.tar.gz
loongson/mirror fpng_py_fix-0.0.3-cp313-cp313-win_amd64.whl
loongson/mirror fpng_py_fix-0.0.3-cp313-cp313-macosx_15_0_arm64.whl