Merge pull request #13888 from nextcloud/enh/noid/postgres-updates

feat: Support postgres 18 but drop postgres 13

Author: szaimen

admin_manual/installation/system_requirements.rst

@@ -27,7 +27,7 @@ For best performance, stability and functionality we have documented some recomm
 |                  | - MariaDB 10.6 / 10.11 / **11.4** (recommended) / 11.8                |
 |                  | - Oracle Database 19c, 21c, 23ai                                      |
 |                  |   (*only as part of an enterprise subscription*)                      |
-|                  | - PostgreSQL 13/14/15/16/17                                           |
+|                  | - PostgreSQL 14/14/15/16/18                                           |
 |                  | - SQLite 3.24+ (*only recommended for testing and minimal-instances*) |
 +------------------+-----------------------------------------------------------------------+
 | Webserver        | - **Apache 2.4 with** ``mod_php`` **or** ``php-fpm`` (recommended)    |

admin_manual/release_notes/upgrade_to_33.rst

@@ -8,6 +8,7 @@ System requirements
 * PHP 8.2 is now deprecated but still supported.
 * PHP 8.1 is no longer supported.
 * Oracle 11g is no longer supported.
+* PostgreSQL 13 is no longer supported.
 
 If you configured restrictions on which domains can be contacted on the internet, you need to add connectivity.nextcloud.com to the allowlist, as it’s now used by default to test internet connectivity instead of www.nextcloud.com. You can also configure any other URL to use in the configuration instead. See :ref:`connections_to_remote_servers`.