[ImgBot] Optimize images

*Total -- 1,302.01kb -> 1,157.21kb (11.12%)

/plebnet/assets/img/qrcode_connect.png -- 10.23kb -> 1.35kb (86.83%)
/plebnet/assets/img/icons/search.png -- 14.10kb -> 9.37kb (33.51%)
/plebnet/assets/img/icons/info.png -- 17.80kb -> 11.96kb (32.82%)
/plebnet/assets/img/icons/setting.png -- 18.73kb -> 12.80kb (31.69%)
/plebnet/assets/img/icons/donate.png -- 8.64kb -> 6.17kb (28.52%)
/plebnet/assets/img/favicon/safari-pinned-tab.svg -- 1.32kb -> 1.13kb (13.94%)
/plebnet/assets/img/icons/search_64.png -- 1.39kb -> 1.21kb (12.82%)
/plebnet/assets/img/favicon.png -- 18.81kb -> 16.52kb (12.17%)
/plebnet/assets/img/icons/setting_64.png -- 1.69kb -> 1.49kb (11.67%)
/plebnet/assets/img/icons/info_64.png -- 1.52kb -> 1.36kb (10.05%)
/plebnet/assets/img/thumbnail.png -- 519.97kb -> 469.68kb (9.67%)
/plebnet/assets/img/thumbnail3d.png -- 687.82kb -> 624.15kb (9.26%)

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plebnet/assets/img/favicon/safari-pinned-tab.svg

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