chore(package): update @types/node to version 11.10.4

Closes #18

Author: greenkeeper[bot]

package.json

@@ -23,7 +23,7 @@
   },
   "devDependencies": {
     "@types/jest": "^23.3.7",
-    "@types/node": "^10.12.2",
+    "@types/node": "^11.10.4",
     "del-cli": "^1.0.0",
     "husky": "^1.1.2",
     "jest": "^23.6.0",