[ImgBot] Optimize images

*Total -- 25.55kb -> 21.70kb (15.07%)

/manifest/android-chrome-192x192.png -- 5.31kb -> 4.36kb (17.99%)
/manifest/mstile-150x150.png -- 4.02kb -> 3.34kb (16.83%)
/manifest/android-chrome-384x384.png -- 11.65kb -> 9.76kb (16.22%)
/manifest/safari-pinned-tab.svg -- 1.19kb -> 1.01kb (15.38%)
/manifest/favicon-32x32.png -- 0.91kb -> 0.85kb (5.71%)
/manifest/apple-touch-icon.png -- 1.89kb -> 1.81kb (4.19%)
/manifest/favicon-16x16.png -- 0.58kb -> 0.57kb (2.53%)

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

Author: ImgBotApp