♻️ Move validation to Request

bot/Bot.php

@@ -21,14 +21,6 @@ class Bot
         $this->config = $config;
     }
 
-    public function isRequestValid(): bool
-    {
-        return hash_equals(
-            hash_hmac('sha256', $this->request->nc_random . $this->request->body, $this->config['secret']),
-            strtolower($this->request->nc_signature)
-        );
-    }
-
     /**
      * @param string          $pattern  the pattern to listen for
      * @param \Closure|string $callback the callback to execute. Either a closure or a Class@method notation