Updated package.json file

this resolution property helps with duplication errors with graphql, more info graphql/graphql-js#491

Author: arausly

package.json

@@ -21,5 +21,8 @@
     "graphql-tools": "^2.24.0",
     "jest": "^22.4.3",
     "nodemon": "^1.17.3"
+  },
+    "resolutions": {
+    "graphql": "^0.13.2"
   }
 }