databases/postgresql??-server: update to latest version

The PostgreSQL Global Development Group has released an update to all
supported versions of PostgreSQL, including 15.3, 14.8, 13.11, 12.15,
and 11.20. This release fixes two security vulnerabilities over 80 bugs
reported over the last several months.

CVE-2023-2454: CREATE SCHEMA ... schema_element defeats protective search_path changes.

This enabled an attacker having database-level CREATE privilege to
execute arbitrary code as the bootstrap superuser. Database owners have
that right by default, and explicit grants may extend it to other users.

CVE-2023-2455: Row security policies disregard user ID changes after inlining.

While CVE-2016-2193 fixed most interaction between row security and user
ID changes, it missed a scenario involving function inlining. This leads
to potentially incorrect policies being applied in cases where
role-specific policies are used and a given query is planned under one
role and then executed under other roles. This scenario can happen under
security definer functions or when a common user and query is planned
initially and then re-used across multiple SET ROLEs. Applying an
incorrect policy may permit a user to complete otherwise-forbidden reads
and modifications. This affects only databases that have used CREATE
POLICY to define a row security policy.

Security:	fbb5a260-f00f-11ed-bbae-6cc21735f730
Security:	4b636f50-f011-11ed-bbae-6cc21735f730
Release-notes:	https://www.postgresql.org/docs/release/