chore(package): update @types/node to version 13.1.1

Closes #49

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "@types/chai": "^4.2.3",
     "@types/mocha": "^5.2.7",
     "@types/moment-timezone": "^0.5.12",
-    "@types/node": "^12.11.2",
+    "@types/node": "^13.1.1",
     "@types/crypto-js": "^3.1.43",
     "@types/signale": "^1.2.1",
     "chai": "^4.2.0",