chore(package): update @types/node to version 13.13.3

Closes #46

Author: greenkeeper[bot]

package.json

@@ -35,7 +35,7 @@
   "devDependencies": {
     "@types/jest": "23.3.2",
     "@types/lodash": "4.14.112",
-    "@types/node": "^11.9.0",
+    "@types/node": "^13.13.3",
     "babel-code-frame": "6.26.0",
     "glob-all": "3.1.0",
     "jest": "23.1.0",