package/mutt: bump to version 2.2.7

This is a bug-fix release, fixing a $edit_headers bug on MacOS, along
with a few other small bugs. It also tightens the $query_command parser
to accept a single tab between fields, and changes $pager to accept a %s
expando.

https://gitlab.com/muttmua/mutt/-/blob/mutt-2-2-7-rel/ChangeLog



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>