Handle ten second rate limit

In the case a lot of email messages are sent and needed to be tracked within HubSpot we receive the following error message "You have reached your ten_secondly_rolling limit.". 

The retries should split the burst regarding the ten second rate limit.

src/HubspotEmailChannel.php

@@ -105,7 +105,7 @@ protected function callApi(string $baseUrl, string $method, array $params = []):
             $params['hapikey'] = $apiKey;
         }
 
-        $http = Http::acceptJson();
+        $http = Http::acceptJson()->retry(3, 11 * 1000);
 
         if (is_null($apiKey)) {
             if (is_null(config('hubspot.access_token'))) {