[ImgBot] Optimize images

*Total -- 140.07kb -> 115.21kb (17.75%)

/assets/images/android-icon-background.png -- 17.14kb -> 7.20kb (57.99%)
/assets/images/android-icon-monochrome.png -- 4.04kb -> 2.31kb (42.78%)
/assets/images/react-logo.png -- 6.19kb -> 4.42kb (28.61%)
/assets/images/[email protected] -- 13.89kb -> 10.02kb (27.84%)
/assets/images/[email protected] -- 20.75kb -> 15.11kb (27.2%)
/assets/images/favicon.png -- 1.10kb -> 0.83kb (24.27%)
/assets/images/android-icon-foreground.png -- 76.95kb -> 75.31kb (2.13%)

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

Author: ImgBotApp