chore(deps): update dependency graphql-yoga to v1.6.0

Author: renovate-bot

example/package.json

@@ -5,7 +5,7 @@
   },
   "dependencies": {
     "graphql-binding-github": "0.3.18",
-    "graphql-yoga": "1.5.2"
+    "graphql-yoga": "1.6.0"
   },
   "now": {
     "alias": "graphql-binding-github"

example/yarn.lock

@@ -535,9 +535,9 @@ graphql-tools@^2.18.0:
     graphql-subscriptions "^0.5.6"
     uuid "^3.1.0"
 
-graphql-yoga@1.5.2:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.5.2.tgz#5a9bb7dd8afbcbac8c406e7127d15df67bc53885"
+graphql-yoga@1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.6.0.tgz#0c15bc922e7afd1274dfcd7dce8f7c88815158bc"
   dependencies:
     "@types/cors" "^2.8.3"
     "@types/express" "^4.0.39"