[Sync EN] Document new pgsql functions added in PHP 8.4 (#5351)

[github-actions]

Commit: https://github.com/php/doc-en/commit/491bd06bf430a9b0d9117a7b7c2c2b02a46ef84b
PR: https://github.com/php/doc-en/pull/5351

Neue EN-Dateien (noch nicht übersetzt)

• reference/pgsql/functions/pg-change-password.xml
• reference/pgsql/functions/pg-jit.xml
• reference/pgsql/functions/pg-put-copy-data.xml
• reference/pgsql/functions/pg-put-copy-end.xml
• reference/pgsql/functions/pg-socket-poll.xml