remove trailing comma

Author: jorgefilipecosta

src/wp-includes/abilities/class-wp-post-type-abilities.php

@@ -1500,7 +1500,7 @@ private static function process_date_top_level( array $input, array &$result ):
 	private static function get_allowed_meta_keys( string $post_type_slug ): array {
 		$registered_meta = array_merge(
 			get_registered_meta_keys( 'post' ),
-			get_registered_meta_keys( 'post', $post_type_slug ),
+			get_registered_meta_keys( 'post', $post_type_slug )
 		);
 
 		$allowed = array();