chore(deps): update dependency @types/node to v9.4.3

Author: renovate-bot

package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "@types/graphql": "0.12.3",
-    "@types/node": "9.4.2",
+    "@types/node": "9.4.3",
     "typescript": "2.7.1"
   },
   "repository": {

yarn.lock

@@ -6,9 +6,9 @@
   version "0.12.3"
   resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.12.3.tgz#c429585aaa4523135e0ab4e12dec72d2d913946f"
 
-"@types/node@9.4.2":
-  version "9.4.2"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-9.4.2.tgz#b109a6c4f64147ccf9476d9e1a6fbf69a10faeb8"
+"@types/node@9.4.3":
+  version "9.4.3"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-9.4.3.tgz#121b21929abfa537f47099d1d0b21b337fe2c8a5"
 
 "@types/zen-observable@0.5.3":
   version "0.5.3"