[ImgBot] Optimize images

*Total -- 3,540.84kb -> 3,310.58kb (6.5%)

/public/cms/prof.png -- 1,420.25kb -> 1,274.10kb (10.29%)
/public/cms/img_6713.jpg -- 2,120.59kb -> 2,036.48kb (3.97%)

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

Author: ImgBotApp