fix: bump graphql-config

Author: timsuchanek

package.json

@@ -9,7 +9,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "graphcool-yml": "0.4.15",
-    "graphql-config": "^2.2.1"
+    "graphql-config": "2.2.1"
   },
   "devDependencies": {
     "@types/node": "9.4.6",

yarn.lock

@@ -164,7 +164,7 @@ graphcool-yml@0.4.15:
     scuid "^1.0.2"
     yaml-ast-parser "^0.0.40"
 
-graphql-config@^2.2.1:
+graphql-config@2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/graphql-config/-/graphql-config-2.2.1.tgz#5fd0ec77ac7428ca5fb2026cf131be10151a0cb2"
   dependencies: