Issue #3473325: slick_libraries_get_path method not found

Closes #3473325

modules/lightning_media_slideshow/lightning_media_slideshow.install

@@ -7,8 +7,9 @@ use GuzzleHttp\RequestOptions;
  * Downloads the Slick JavaScript library if needed.
  */
 function lightning_media_slideshow_update_9001(array &$sandbox) {
+  $moduleHandler = \Drupal::service('module_handler');
   // If the Slick library is already available, there's nothing to do.
-  $dir = slick_libraries_get_path('slick') ?: slick_libraries_get_path('slick-carousel') ?: slick_libraries_get_path('accessible-slick');
+  $dir = $moduleHandler->getModule('slick')->getPath() ?: $moduleHandler->getModule('slick-carousel')->getPath() ?: $moduleHandler->getModule('accessible-slick')->getPath();
   if ($dir) {
     return;
   }