devel/cereal: Unbreak by upgrading to 1.3.2

Reference explaining why cereal-1.3.1 is broken:
https://github.com/symengine/symengine/issues/1907#issuecomment-1114016265

Approved by: portmgr (blanket; unbreak)

(cherry picked from commit c5e154ad98ffc2290e406c6bc6dc65873d6b30f8)