chore(deps): update dependency graphql-yoga to v1.2.3

Author: renovate-bot

example/package.json

@@ -5,7 +5,7 @@
   },
   "dependencies": {
     "graphql-binding-github": "0.3.3",
-    "graphql-yoga": "1.2.2"
+    "graphql-yoga": "1.2.3"
   },
   "now": {
     "alias": "graphql-binding-github"

example/yarn.lock

@@ -449,9 +449,9 @@ graphql-tools@2.20.1:
     deprecated-decorator "^0.1.6"
     uuid "^3.1.0"
 
-graphql-yoga@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.2.2.tgz#62cbabe666ed0c51ff8aeb5cdbcabb828a9b5d30"
+graphql-yoga@1.2.3:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/graphql-yoga/-/graphql-yoga-1.2.3.tgz#62889bf7f77e61b441848de3209bf73f762eab4f"
   dependencies:
     "@types/cors" "^2.8.3"
     "@types/express" "^4.0.39"