[ImgBot] Optimize images

*Total -- 740.39kb -> 708.24kb (4.34%)

/Gender-Age Detection/man1.jpg -- 191.78kb -> 179.29kb (6.51%)
/Gender-Age Detection/girl1.jpg -- 83.68kb -> 79.37kb (5.15%)
/Gender-Age Detection/woman1.jpg -- 151.26kb -> 145.29kb (3.95%)
/Gender-Age Detection/girl2.jpg -- 95.80kb -> 92.15kb (3.81%)
/Gender-Age Detection/woman3.jpg -- 92.11kb -> 88.97kb (3.41%)
/Gender-Age Detection/minion.jpg -- 33.27kb -> 32.17kb (3.28%)
/Gender-Age Detection/kid1.jpg -- 92.49kb -> 90.99kb (1.62%)

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

Author: ImgBotApp