chore(package): update @types/node to version 9.3.0 (#46)

Author: greenkeeper[bot]

package.json

@@ -14,7 +14,7 @@
   },
   "devDependencies": {
     "@types/blue-tape": "^0.1.31",
-    "@types/node": "^8.0.7",
+    "@types/node": "^9.3.0",
     "blue-tape": "^1.0.0",
     "onchange": "^3.2.1",
     "tap-spec": "^4.1.1",