[ImgBot] Optimize images

*Total -- 273.45kb -> 251.62kb (7.98%)

/screenshots/screenshot1.jpg -- 175.66kb -> 156.69kb (10.8%)
/public/images/hero.jpg -- 97.80kb -> 94.94kb (2.92%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp