package/postgresql: security bump version to 13.2

Release notes:
https://www.postgresql.org/about/news/postgresql-132-126-1111-1016-9621-and-9525-released-2165/

Fixes CVE-2021-3393 & CVE-2021-20229.

Updated license hash due to copyright year bump:
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=c09f6882d6f78bde26fcc1e1a3da11c274de596a



Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>