chore(deps): update dependency @types/node to v9.6.0

Author: renovate-bot

package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "@types/graphql": "0.12.6",
-    "@types/node": "9.4.7",
+    "@types/node": "9.6.0",
     "typescript": "2.7.2"
   },
   "repository": {

yarn.lock

@@ -6,9 +6,9 @@
   version "0.12.6"
   resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.12.6.tgz#3d619198585fcabe5f4e1adfb5cf5f3388c66c13"
 
-"@types/node@9.4.7":
-  version "9.4.7"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-9.4.7.tgz#57d81cd98719df2c9de118f2d5f3b1120dcd7275"
+"@types/node@9.6.0":
+  version "9.6.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-9.6.0.tgz#d3480ee666df9784b1001a1872a2f6ccefb6c2d7"
 
 "@types/node@^9.4.6":
   version "9.4.6"