Update dependency graphql-yoga to v0.8.1

Author: renovate-bot

basic/server/package.json

@@ -6,7 +6,7 @@
   },
   "dependencies": {
     "graphcool-binding": "0.4.3",
-    "graphql-yoga": "0.8.0"
+    "graphql-yoga": "0.8.1"
   },
   "devDependencies": {
     "now": "8.5.4"

basic/server/yarn.lock

@@ -84,7 +84,7 @@ apollo-link-http@1.3.2:
   dependencies:
     apollo-link "^1.0.7"
 
-apollo-link@1.0.7, apollo-link@^1.0.7:
+apollo-link@1.0.7, apollo-link@^1.0.0, apollo-link@^1.0.7:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/apollo-link/-/apollo-link-1.0.7.tgz#42cd38a7378332fc3e41a214ff6a6e5e703a556f"
   dependencies:
@@ -559,9 +559,19 @@ graphql-tools@2.14.1, graphql-tools@^2.14.0, graphql-tools@^2.14.1:
     deprecated-decorator "^0.1.6"
     uuid "^3.1.0"
 
-graphql-yoga@0.8.0:
-  version "0.8.0"
-  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-0.8.0.tgz#7b5d33d5fbd0b58f419b091266fb11ba49a127ca"
+graphql-tools@^2.16.0:
+  version "2.16.0"
+  resolved "https://registry.yarnpkg.com/graphql-tools/-/graphql-tools-2.16.0.tgz#689e46ce8b4570e01214cb7fda4a0c9338c0459f"
+  dependencies:
+    apollo-link "^1.0.0"
+    apollo-utilities "^1.0.1"
+    deprecated-decorator "^0.1.6"
+    graphql-subscriptions "^0.5.6"
+    uuid "^3.1.0"
+
+graphql-yoga@0.8.1:
+  version "0.8.1"
+  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-0.8.1.tgz#aac559896d0d497bd020e66d073f2c0191d08fb9"
   dependencies:
     "@types/cors" "^2.8.3"
     "@types/express" "^4.0.39"
@@ -577,7 +587,7 @@ graphql-yoga@0.8.0:
     graphql-import "^0.1.9"
     graphql-playground-middleware-express "^1.3.13"
     graphql-subscriptions "^0.5.6"
-    graphql-tools "^2.14.0"
+    graphql-tools "^2.16.0"
     portfinder "^1.0.13"
     subscriptions-transport-ws "^0.9.4"