Go here and give it a thumbs up! https://github.com/FortAwesome/Font-Awesome/issues/16393
Some time ago Font Awesome (the icons you see all over most sites) stopped accepting submissions of ready-made icons (icons created by the community). Now anyone who wishes to get a new icon added has to submit a properly-formatted Issue like this one. Issues are typically not acted on but as with everything, the chance is there.
I've submitted to them before but this time I'm keeping my fingers crossed and hoping for the best.