package/postgresql: security bump version to 16.5
Release notes:
https://www.postgresql.org/about/news/postgresql-171-165-159-1414-1317-and-1221-released-2955/
Fixes CVE-2024-10976, CVE-2024-10977, CVE-2024-10978 & CVE-2024-10979.
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>