[ImgBot] Optimize images

*Total -- 391.63kb -> 351.19kb (10.33%)

/docs/logo.png -- 2.60kb -> 1.44kb (44.54%)
/fern/docs/assets/logo_dark.png -- 2.60kb -> 1.44kb (44.54%)
/fern/docs/assets/logo_light.png -- 7.27kb -> 4.64kb (36.12%)
/Images/20231208_074820_0000-removebg-preview.png -- 167.33kb -> 148.00kb (11.55%)
/fern/docs/assets/ui.png -- 211.84kb -> 195.66kb (7.64%)

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Author: ImgBotApp