fix: Undefined function 'AWS\CRT\HTTP\InvalidArgumentException' (#102)

Co-authored-by: Waqar Ahmed Khan <[email protected]>

src/AWS/CRT/HTTP/Request.php

@@ -13,7 +13,7 @@ class Request extends Message {
     public function __construct($method, $path, $query = [], $headers = [], $body_stream = null) {
         parent::__construct($method, $path, $query, $headers);
         if (!is_null($body_stream) && !($body_stream instanceof InputStream)) {
-            throw InvalidArgumentException('body_stream must be an instance of ' . InputStream::class);
+            throw new \InvalidArgumentException('body_stream must be an instance of ' . InputStream::class);
         }
         $this->body_stream = $body_stream;
     }