Merge pull request #7863 in SW/shopware from ntr/5.6/add-deprecation-notice to 5.6

* commit '143ff9ac005e0ad2952ad901e240397dc1df8dce':
  NTR - Add deprecation notice for `\Shopware\Bundle\StoreFrontBundle\Gateway\DBAL\CategoryGateway::get` with an array of ids

Author: shyim

engine/Shopware/Bundle/StoreFrontBundle/Gateway/DBAL/CategoryGateway.php

@@ -81,12 +81,14 @@ public function __construct(
     public function get($id, Struct\ShopContextInterface $context)
     {
         /*
-         * @deprecated since 5.5, will be removed in Shopware 5.6
+         * @deprecated since 5.5, will be removed in Shopware 5.7
          *
-         * Allowing an array as a parameter is supported in 5.5.x for legacy reasons.
-         * The check below will be removed in Shopware 5.6
+         * Allowing an array as a parameter is supported in 5.5/5.6 for legacy reasons.
+         * The check below will be removed in Shopware 5.7
          */
         if (is_array($id)) {
+            trigger_error(sprintf('Calling %s:%s with an array of Ids is deprecated since Shopware 5.5 and will crash with 5.7. Use a single int Id instead.', __CLASS__, __METHOD__), E_USER_DEPRECATED);
+
             $id = $id[0];
         }
         $categories = $this->getList([$id], $context);