So this uses the icons of https://icon-sets.iconify.design/typcn/social-github/ https://icon-sets.iconify.design/typcn/social-github/ (this one is CC BY SA 4.0)

So this uses the icons of https://icon-sets.iconify.design/typcn/social-github/ https://icon-sets.iconify.design/typcn/social-github/ (this one is CC BY SA 4.0) with critically the attribution, author and license information of the icons missing.