chore(deps): update dependency @types/node to v9.6.39

Author: renovate-bot

package.json

@@ -12,7 +12,7 @@
     "graphql-config": "2.2.1"
   },
   "devDependencies": {
-    "@types/node": "9.4.6",
+    "@types/node": "9.6.39",
     "graphql": "14.0.2",
     "ts-node": "5.0.0",
     "typescript": "2.7.2"

yarn.lock

@@ -2,9 +2,9 @@
 # yarn lockfile v1
 
 
-"@types/node@9.4.6":
-  version "9.4.6"
-  resolved "http://registry.npmjs.org/@types/node/-/node-9.4.6.tgz#d8176d864ee48753d053783e4e463aec86b8d82e"
+"@types/node@9.6.39":
+  version "9.6.39"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-9.6.39.tgz#111cb4f5591cb6945aad34733b4e40bfd59b58fc"
 
 ajv@^5.5.1:
   version "5.5.2"