Replaces deprecated call to EntityManager() with EntityTypeManager()

src/TuftsAlertTrait.php

@@ -58,7 +58,7 @@ trait TuftsAlertTrait {
     // Loop through the list of active alerts and see if any are assigned to the current path's patterns
     foreach($this->nids as $nid) {
       // Get a node storage object.
-      $node_storage = \Drupal::entityManager()->getStorage('node');
+      $node_storage = \Drupal::entityTypeManager()->getStorage('node');
       // Load the node.
       $alert = $node_storage->load($nid);
       // if current path is excluded, take no further action