package/postgresql: bump version to 16.2
Release notes: https://www.postgresql.org/docs/release/16.2/
The hash of the license file is updated due to a change in copyright
years:
-Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>