[ImgBot] Optimize images (#1434)

*Total -- 92.09kb -> 76.66kb (16.76%)

/website/static/img/redux-logo-twitter.png -- 37.60kb -> 28.99kb (22.9%)
/website/static/img/redux-logo-landscape.png -- 38.69kb -> 32.33kb (16.44%)
/website/static/img/noun_Certificate_1945625.svg -- 5.10kb -> 4.84kb (5.1%)
/website/static/img/noun_Rocket_1245262.svg -- 3.35kb -> 3.26kb (2.68%)
/website/static/img/redux_white.svg -- 1.12kb -> 1.09kb (2.27%)
/website/static/img/redux.svg -- 1.12kb -> 1.09kb (2.01%)
/website/static/img/noun_Check_1870817.svg -- 0.30kb -> 0.29kb (1.95%)
/website/static/img/noun_Box_1664404.svg -- 2.72kb -> 2.68kb (1.79%)
/website/static/img/external-link-square-alt-solid.svg -- 0.61kb -> 0.61kb (0.95%)
/website/static/img/github-brands.svg -- 1.48kb -> 1.47kb (0.46%)

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

Co-authored-by: Imgbot <ImgBotHelp@gmail.com>

Author: 2 people