Add ValidateSignature middleware for ignore params (#5942)

* Add ValidateSignature middleware for ignore params

* Comment out query parameters by default

* Remove leading slash

* Update Kernel ValidateSignature middleware path

app/Http/Middleware/ValidateSignature.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Routing\Middleware\ValidateSignature as Middleware;
+
+class ValidateSignature extends Middleware
+{
+    /**
+     * The names of the parameters that should be ignored.
+     *
+     * @var array<int, string>
+     */
+    protected $ignore = [
+        //'utm_campaign',
+        //'utm_source',
+        //'utm_medium',
+        //'utm_content',
+        //'utm_term',
+        //'fbclid',
+    ];
+}