Added months() to Wormhole (#36808)

Author: lairg99

src/Illuminate/Foundation/Testing/Wormhole.php

@@ -102,6 +102,19 @@ public function weeks($callback = null)
         return $this->handleCallback($callback);
     }
 
+    /**
+     * Travel forward the given number of months.
+     *
+     * @param  callable|null  $callback
+     * @return mixed
+     */
+    public function months($callback = null)
+    {
+        Carbon::setTestNow(Carbon::now()->addMonths($this->value));
+
+        return $this->handleCallback($callback);
+    }
+
     /**
      * Travel forward the given number of years.
      *