x11-fonts/firacode: update to 5.2 and remove XORG

People running wayland etc don't want xorg as a hard dependency.

PR: 250329
Submitted by: Lewis Cook <vulcan@wired.sh>
Submitted by: Namkhai B. <namkhai.n3@protonmail.com>
Sponsored by: SkunkWerks, GmbH