fix: avoid deprecated PDO::MYSQL_ATTR_SSL_CA on PHP 8.5

PHP 8.5 deprecates PDO::MYSQL_ATTR_SSL_CA in favour of Pdo\Mysql::ATTR_SSL_CA,
which doesn't exist on PHP 8.3 (our target / CI version). Select the new
constant only when the runtime defines it, falling back to the old one
otherwise. defined() doesn't trigger the deprecation, so 8.5 stays clean
while 8.3 keeps working.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: ikidnapmyself

config/database.php

@@ -59,7 +59,9 @@
             'strict' => true,
             'engine' => null,
             'options' => extension_loaded('pdo_mysql') ? array_filter([
-                PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
+                // PDO::MYSQL_ATTR_SSL_CA is deprecated in PHP 8.5; prefer the
+                // Pdo\Mysql::ATTR_SSL_CA constant when the runtime provides it.
+                (defined('Pdo\Mysql::ATTR_SSL_CA') ? Pdo\Mysql::ATTR_SSL_CA : PDO::MYSQL_ATTR_SSL_CA) => env('MYSQL_ATTR_SSL_CA'),
             ]) : [],
         ],