Set featured listing admin checkbox label value in WP Job Manager

functions.php

<?php

add_filter( 'job_manager_job_listing_data_fields', 'smyles_change_featured_listing_label', 9999 );

function smyles_change_featured_listing_label( $fields ){

	if( array_key_exists( '_featured', $fields ) ){
		$fields['_featured']['label'] = __( 'Make Listing Sticky' );
		$fields['_featured']['description'] = __( 'Featured listings will be sticky during searches, and can be styled differently.' );
	}

	return $fields;
}