package/dovecot-pigeonhole: bump version to 0.5.13
Release notes:
https://dovecot.org/pipermail/dovecot-news/2021-January/000449.html
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 8d1c4c717e8902b37979a155f2c073b7f8bbb519)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>