[ImgBot] Optimize images

*Total -- 416.29kb -> 349.73kb (15.99%)

/src/assets/og/og.image.jpg -- 96.81kb -> 73.21kb (24.39%)
/src/assets/og/twitter.image.jpg -- 75.30kb -> 57.15kb (24.1%)
/src/assets/og/join.png -- 65.68kb -> 51.39kb (21.75%)
/src/assets/landing/join.jpg -- 75.24kb -> 70.33kb (6.52%)
/src/assets/landing/colaborate.jpg -- 96.89kb -> 91.30kb (5.77%)
/static/favicon.svg -- 1.40kb -> 1.39kb (0.42%)
/src/assets/svg/git-branches.svg -- 4.97kb -> 4.97kb (0.16%)

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

Author: ImgBotApp