chore(deps): update dependency graphql-yoga to v1.8.5

Author: renovate-bot

example/package.json

@@ -5,7 +5,7 @@
   },
   "dependencies": {
     "graphql-binding-github": "0.3.20",
-    "graphql-yoga": "1.8.4"
+    "graphql-yoga": "1.8.5"
   },
   "now": {
     "alias": "graphql-binding-github"

example/yarn.lock

@@ -485,9 +485,9 @@ graphql-playground-html@1.5.5:
   dependencies:
     graphql-config "2.0.0"
 
-graphql-playground-middleware-express@1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/graphql-playground-middleware-express/-/graphql-playground-middleware-express-1.6.0.tgz#2a9da3a397ea63573c0186cb7b61f300d45794a0"
+graphql-playground-middleware-express@1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/graphql-playground-middleware-express/-/graphql-playground-middleware-express-1.6.1.tgz#d6287d124a1c55845a52a7d727c371da99cdf0b0"
   dependencies:
     graphql-playground-html "1.5.5"
 
@@ -529,9 +529,9 @@ graphql-tools@^2.23.1:
     iterall "^1.1.3"
     uuid "^3.1.0"
 
-graphql-yoga@1.8.4:
-  version "1.8.4"
-  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.8.4.tgz#f62083553861ca13dcc2c0de4f8da716326f70c0"
+graphql-yoga@1.8.5:
+  version "1.8.5"
+  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.8.5.tgz#e06c77fbfd6a186afeaf21baf9617bdf8636d502"
   dependencies:
     "@types/cors" "^2.8.3"
     "@types/express" "^4.11.1"
@@ -546,7 +546,7 @@ graphql-yoga@1.8.4:
     express "^4.16.3"
     graphql "^0.11.0 || ^0.12.0 || ^0.13.0"
     graphql-import "^0.5.0"
-    graphql-playground-middleware-express "1.6.0"
+    graphql-playground-middleware-express "1.6.1"
     graphql-playground-middleware-lambda "1.5.0"
     graphql-subscriptions "^0.5.8"
     graphql-tools "^2.23.1"