fix: collect hotel codes from every CRM selection group

src/BusProNet/XmlParser/CrmAttributesResponseParser.php

@@ -29,7 +29,7 @@ class CrmAttributesResponseParser
 
         $result
             ->filterXPath('//selektionsmerkmale/selektionsgruppe')
-            ->each(function (Crawler $node) use (&$groups, &$roles) {
+            ->each(function (Crawler $node) use (&$groups, &$roles, &$hotelCodes) {
                 $group = new CrmSelectionGroup();
                 $group->id = (int) $node->attr('id');
                 $group->label = $node->attr('bezeichnung');