Merge pull request #4752 from ubient/add-mailgun-endpoint-option

Add missing Mailgun 'endpoint' option

config/services.php

@@ -17,6 +17,7 @@ return [
     'mailgun' => [
         'domain' => env('MAILGUN_DOMAIN'),
         'secret' => env('MAILGUN_SECRET'),
+        'endpoint' => env('MAILGUN_ENDPOINT', 'api.mailgun.net'),
     ],
 
     'ses' => [