[ImgBot] Optimize images

*Total -- 3,637.41kb -> 3,193.40kb (12.21%)

/static/uploads/italic-fonts-blog.png -- 2,408.07kb -> 2,076.92kb (13.75%)
/static/uploads/Winston Transport Cover.png -- 319.44kb -> 285.20kb (10.72%)
/static/uploads/what-made-a-dev-cover.jpg -- 909.90kb -> 831.29kb (8.64%)

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

Author: ImgBotApp