archwiki: allow uploading WOFF2 format fonts
https://wiki.archlinux.org/title/Template:Text_art needs a consistent font.
Discussed in https://wiki.archlinux.org/title/Template_talk:Text_art#Use_of_non-ASCII_characters
Due to an influx of spam, we have had to temporarily disable account registrations. Please write an email to accountsupport@archlinux.org, with your desired username, if you want to get access. Sorry for the inconvenience.
https://wiki.archlinux.org/title/Template:Text_art needs a consistent font.
Discussed in https://wiki.archlinux.org/title/Template_talk:Text_art#Use_of_non-ASCII_characters