[ImgBot] Optimize images

*Total -- 251.33kb -> 239.87kb (4.56%)

/assets/img/Screenshot_20231214_150524.png -- 115.86kb -> 106.51kb (8.07%)
/assets/img/Screenshot_20231214_150500.png -- 135.47kb -> 133.36kb (1.55%)

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

Author: ImgBotApp