Update dependency graphql-yoga to v1.6.1

Author: renovate-bot

basic/server/package.json

@@ -6,7 +6,7 @@
   },
   "dependencies": {
     "graphcool-binding": "1.3.5",
-    "graphql-yoga": "1.6.0"
+    "graphql-yoga": "1.6.1"
   },
   "devDependencies": {
     "now": "8.5.4"

basic/server/yarn.lock

@@ -535,9 +535,9 @@ graphql-tools@2.18.0, graphql-tools@^2.18.0:
     graphql-subscriptions "^0.5.6"
     uuid "^3.1.0"
 
-graphql-yoga@1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.6.0.tgz#0c15bc922e7afd1274dfcd7dce8f7c88815158bc"
+graphql-yoga@1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.6.1.tgz#3214952714f38c9214ed12cea6e5164f5aadf2a5"
   dependencies:
     "@types/cors" "^2.8.3"
     "@types/express" "^4.0.39"