[Sync EN] pdo_pgsql: document 8.5 deprecations, add examples, fix inconsistencies (#5626)

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Commit: https://github.com/php/doc-en/commit/858400b07586b88dcb1e17a95e7a178b54b89d86
PR: https://github.com/php/doc-en/pull/5626

Fichiers FR à mettre à jour

• appendices/migration84/other-changes.xml
• reference/pdo_pgsql/constants.xml
• reference/pdo_pgsql/pdo-pgsql.xml
• reference/pdo_pgsql/pdo/pgsql/copyfromarray.xml
• reference/pdo_pgsql/pdo/pgsql/copyfromfile.xml
• reference/pdo_pgsql/pdo/pgsql/copytoarray.xml
• reference/pdo_pgsql/pdo/pgsql/copytofile.xml
• reference/pdo_pgsql/pdo/pgsql/getnotify.xml
• reference/pdo_pgsql/pdo/pgsql/getpid.xml
• reference/pdo_pgsql/pdo/pgsql/lobopen.xml
• reference/pdo_pgsql/pdo/pgsql/lobunlink.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlCopyFromArray.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlCopyFromFile.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlCopyToArray.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlCopyToFile.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlGetNotify.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlGetPid.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlLOBCreate.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlLOBOpen.xml
• reference/pdo_pgsql/pdo_overloaded/pgsqlLOBUnlink.xml
• reference/pdo_pgsql/reference.xml