[ImgBot] Optimize images

*Total -- 1,785.72kb -> 1,657.71kb (7.17%)

/plymouth/themes/darwin/background.png -- 6.67kb -> 0.56kb (91.64%)
/plymouth/themes/darwin/animation.png -- 2.98kb -> 0.42kb (85.79%)
/plymouth/themes/darwin/suspend.png -- 1.48kb -> 0.34kb (76.91%)
/plymouth/themes/darwin/logo.png -- 20.52kb -> 9.46kb (53.87%)
/grub/CyberRe/highlight_w.png -- 3.58kb -> 2.20kb (38.41%)
/plymouth/themes/darwin/motif.png -- 8.73kb -> 5.46kb (37.49%)
/grub/CyberRe/boot_menu2_c.png -- 1.70kb -> 1.31kb (22.99%)
/grub/CyberRe/highlight_c.png -- 2.00kb -> 1.58kb (20.85%)
/grub/CyberRe/background.png -- 1,099.54kb -> 1,031.66kb (6.17%)
/grub/CyberRe/preview.png -- 637.69kb -> 603.89kb (5.3%)
/plymouth/themes/darwin/box.png -- 0.85kb -> 0.84kb (1.26%)

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Author: ImgBotApp