.gitlab-ci.d/cirrus.yml: Update FreeBSD to v13.2

The FreeBSD CI job started to fail due to linking problems ... time
to update to the latest version to get this fixed.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230823144533.230477-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230829161528.2707696-6-alex.bennee@linaro.org>