[BUGFIX] Restrict aim backend module to admins

Author: o-ba

Configuration/Backend/Modules.php

@@ -7,6 +7,7 @@
 return [
     'aim' => [
         'parent' => $parent,
+        'access' => 'admin',
         'position' => ['before' => '*'],
         'appearance' => [
             'dependsOnSubmodules' => true,