Update composer.json

Author: iampersistent

composer.json

@@ -6,7 +6,7 @@
     "license": "MIT",
     "require": {
         "codeception/codeception": "^2.1 || ^3.1.3 || ^4.1.22 || ^5.0",
-        "euautomation/graphql-client": "0.2 || ^0.3",
+        "euautomation/graphql-client": "0.2 || ^0.3 || dev-master",
         "php": ">=7.1"
     },
     "autoload": {