[TASK] Only allow 3 chars for currency code

Configuration/TCA/tx_sgjobs_domain_model_job.php

@@ -395,6 +395,7 @@ return call_user_func(
 					'config' => [
 						'type' => 'input',
 						'eval' => 'upper',
+						'max' => 3,
 					],
 				],
 				'salary_unit' => [