[ImgBot] Optimize images

*Total -- 454.15kb -> 369.09kb (18.73%)

/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/[email protected] -- 93.13kb -> 62.33kb (33.07%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/[email protected] -- 39.53kb -> 27.93kb (29.36%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/512.png -- 37.95kb -> 27.92kb (26.42%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/[email protected] -- 16.51kb -> 12.56kb (23.94%)
/doc/images/github_metadata_develbranch.png -- 64.04kb -> 49.36kb (22.92%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/256.png -- 15.88kb -> 12.70kb (20.02%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/128.png -- 7.12kb -> 5.73kb (19.56%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/[email protected] -- 3.29kb -> 2.68kb (18.56%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/[email protected] -- 1.43kb -> 1.25kb (13.14%)
/doc/images/github_metadata_pullrequest.png -- 36.66kb -> 31.91kb (12.94%)
/contrib/mac/frameworkapp/JuliaLauncher/Assets.xcassets/AppIcon.appiconset/32.png -- 1.44kb -> 1.26kb (12.27%)
/doc/images/jltypes.svg -- 120.36kb -> 116.92kb (2.86%)
/doc/src/assets/logo-dark.svg -- 6.82kb -> 6.69kb (1.92%)
/doc/src/assets/logo.svg -- 6.81kb -> 6.69kb (1.84%)
/contrib/julia.svg -- 3.19kb -> 3.18kb (0.15%)

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