This broke compilation of Guix with guile@3.0.2 with:
In procedure make-regexp: Invalid range end
The fix is to replace [0-9A-f] with [0-9A-Fa-f].
* gnu/build/jami-service.scm (account-fingerprint-rx): Correct regexp.
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>