package/mutt: bump to version 2.1.4

Mutt 2.1.4 was released on December 11, 2021. This is a bug-fix release,
fixing a performance issue when used with DavMail.

Mutt 2.1.3 was released on September 10, 2021. This is a bug-fix
release, fixing some of the fixes in the last release. IMAP and
QRESYNC users are advised to upgrade.

Mutt 2.1.2 was released on August 24, 2021. This is an important bug-fix
release, fixing a potential data-loss IMAP bug, a couple QRESYNC bugs,
and a few other issues. IMAP users are strongly advised to upgrade.

http://www.mutt.org
https://gitlab.com/muttmua/mutt/-/blob/mutt-2-1-4-rel/ChangeLog



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>