[ImgBot] Optimize images

*Total -- 2,306.87kb -> 1,968.80kb (14.66%)

/public/assets/imgs/blog/lttbagdesign.jpg -- 2,156.63kb -> 1,829.67kb (15.16%)
/diagram.svg -- 150.24kb -> 139.13kb (7.39%)

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

Author: ImgBotApp