Consider updating favicon with new method

[pglevy]

See this gist

[pglevy]

This was working on bootstrap branch of PVGHP

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.4.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license (Commercial License) Copyright 2023 Fonticons, Inc. -->
<style>
    @media (prefers-color-scheme: dark) {
    .a { fill: #f6f8fa }
    }
</style>
<path class="a" fill="#24292f" d="M367.1 160c.6-5.3 .9-10.6 .9-16C368 64.5 303.5 0 224 0S80 64.5 80 144c0 5.4 .3 10.7 .9 16H80c-26.5 0-48 21.5-48 48s21.5 48 48 48h53.5 181H368c26.5 0 48-21.5 48-48s-21.5-48-48-48h-.9zM96 288L200.8 497.7c4.4 8.8 13.3 14.3 23.2 14.3s18.8-5.5 23.2-14.3L352 288H96z"/>
</svg>