[ImgBot] Optimize images

*Total -- 3,393.09kb -> 1,814.11kb (46.54%)

/images/version/1.0.png -- 866.26kb -> 449.58kb (48.1%)
/images/version/3.0.png -- 1,175.72kb -> 627.79kb (46.6%)
/images/version/2.0.png -- 1,351.11kb -> 736.74kb (45.47%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp