[ImgBot] Optimize images

*Total -- 7,887.00kb -> 7,038.06kb (10.76%)

/public/images/footer.png -- 22.13kb -> 18.24kb (17.57%)
/public/images/img5.png -- 527.29kb -> 446.26kb (15.37%)
/public/images/articles/posts/img6.png -- 588.68kb -> 499.18kb (15.2%)
/public/images/img3.png -- 257.69kb -> 219.69kb (14.75%)
/public/images/img4.png -- 536.59kb -> 461.73kb (13.95%)
/public/images/articles/img5.png -- 438.87kb -> 379.67kb (13.49%)
/public/images/articles/posts/img3.png -- 446.14kb -> 388.29kb (12.97%)
/public/images/articles/posts/img5.png -- 414.04kb -> 363.58kb (12.19%)
/public/images/articles/img4.png -- 345.39kb -> 303.61kb (12.1%)
/public/images/articles/posts/img7.png -- 626.21kb -> 552.69kb (11.74%)
/public/images/articles/posts/img2.png -- 940.63kb -> 834.80kb (11.25%)
/public/images/articles/posts/img4.png -- 575.27kb -> 512.20kb (10.96%)
/public/images/img1.jpeg -- 40.82kb -> 37.28kb (8.67%)
/public/images/articles/img2.jpeg -- 22.01kb -> 20.44kb (7.13%)
/public/images/banner.png -- 82.65kb -> 77.00kb (6.84%)
/public/images/articles/posts/img1.jpeg -- 79.64kb -> 74.87kb (5.99%)
/public/images/not_found.png -- 1,422.22kb -> 1,342.54kb (5.6%)
/public/images/img2.jpeg -- 29.21kb -> 27.63kb (5.4%)
/public/images/articles/img1.jpeg -- 22.36kb -> 21.27kb (4.87%)
/public/images/author/author1.jpeg -- 10.77kb -> 10.43kb (3.2%)
/public/images/404_Not_found.png -- 400.08kb -> 389.32kb (2.69%)
/public/images/articles/img3.jpeg -- 58.31kb -> 57.35kb (1.66%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp