[ImgBot] Optimize images

*Total -- 1,896.01kb -> 1,770.60kb (6.61%)

/_4/output_1.jpg -- 35.91kb -> 33.24kb (7.44%)
/_7/output_1.jpg -- 84.36kb -> 78.22kb (7.27%)
/_7/output_6.jpg -- 55.14kb -> 51.25kb (7.05%)
/_7/output_5.jpg -- 83.05kb -> 77.26kb (6.97%)
/_7/output_3.jpg -- 88.07kb -> 81.94kb (6.95%)
/_3/output.jpg -- 42.02kb -> 39.12kb (6.89%)
/_7/output_4.jpg -- 87.96kb -> 81.91kb (6.88%)
/_5/output.jpg -- 29.69kb -> 27.67kb (6.82%)
/_8/output_3.jpg -- 236.73kb -> 220.64kb (6.8%)
/_7/output_2.jpg -- 97.81kb -> 91.17kb (6.78%)
/_4/output_2.jpg -- 33.54kb -> 31.29kb (6.71%)
/_8/output_2.jpg -- 265.40kb -> 247.73kb (6.66%)
/_8/output_4.jpg -- 253.15kb -> 236.42kb (6.61%)
/_8/output_1.jpg -- 249.43kb -> 233.15kb (6.52%)
/_1/output_2.jpg -- 68.05kb -> 63.92kb (6.06%)
/_1/output_1.jpg -- 78.44kb -> 73.97kb (5.69%)
/_2/output.jpg -- 79.13kb -> 74.71kb (5.59%)
/_6/output.jpg -- 28.15kb -> 26.97kb (4.18%)

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

Author: ImgBotApp