Use PHP 7.4 featers and PHP 8 polyfills

inc/country/class-country-my.php

@@ -57,11 +57,11 @@ class Country_MY extends Country {
 	 * @since 2.0.11
 	 * @var array
 	 */
-	protected $attributes = array(
+	protected $attributes = [
 		'country_code' => 'MY',
 		'currency'     => 'MYR',
 		'phone_code'   => 60,
-	);
+	];
 
 	/**
 	 * The type of nomenclature used to refer to the country sub-divisions.
@@ -90,7 +90,7 @@ class Country_MY extends Country {
 	 */
 	protected function states() {
 
-		return array(
+		return [
 			'10' => __('Selangor', 'wp-ultimo'),
 			'11' => __('Terengganu', 'wp-ultimo'),
 			'12' => __('Sabah', 'wp-ultimo'),
@@ -107,6 +107,6 @@ class Country_MY extends Country {
 			'07' => __('Penang', 'wp-ultimo'),
 			'08' => __('Perak', 'wp-ultimo'),
 			'09' => __('Perlis', 'wp-ultimo'),
-		);
+		];
 	}
 }