patch dependency for 1.1 release

Author: Artem Bondarenko

composer.json

@@ -26,7 +26,7 @@
         "php": ">=5.6.4",
         "laravel/framework": "5.4.*",
         "laravel/tinker": "~1.0",
-        "mailjet/mailjet-apiv3-php": "^1.2",
+        "mailjet/mailjet-apiv3-php": "1.2",
         "mailjet/mailjet-swiftmailer": "^1.0"
     },
     "require-dev": {