[ImgBot] Optimize images

*Total -- 518.30kb -> 423.82kb (18.23%)

/icons/postlit-green.png -- 1.66kb -> 0.32kb (80.47%)
/archives/site/icons/postlit-green.png -- 1.66kb -> 0.32kb (80.47%)
/icons/github-mark-white.png -- 4.72kb -> 2.83kb (39.98%)
/archives/site/icons/github-mark-white.png -- 4.72kb -> 2.83kb (39.98%)
/icons/discord.png -- 43.06kb -> 27.81kb (35.43%)
/archives/site/icons/discord.png -- 43.06kb -> 27.81kb (35.43%)
/favicons/android-chrome-512x512.png -- 56.99kb -> 47.16kb (17.24%)
/archives/site/favicons/android-chrome-512x512.png -- 56.99kb -> 47.16kb (17.24%)
/favicons/android-chrome-192x192.png -- 14.09kb -> 11.97kb (15.04%)
/archives/site/favicons/android-chrome-192x192.png -- 14.09kb -> 11.97kb (15.04%)
/favicons/apple-touch-icon.png -- 12.61kb -> 10.72kb (14.93%)
/archives/site/favicons/apple-touch-icon.png -- 12.61kb -> 10.72kb (14.93%)
/archives/site/media/leopfp-removebg-fixed.png -- 99.75kb -> 87.27kb (12.51%)
/archives/site/media/leopfp-removebg.png -- 97.45kb -> 85.28kb (12.49%)
/archives/site/leopfp.png -- 52.94kb -> 47.71kb (9.87%)
/archives/site/icons/discord-new.svg -- 0.96kb -> 0.96kb (0.1%)
/icons/discord-new.svg -- 0.96kb -> 0.96kb (0.1%)

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

Author: ImgBotApp