chore(package): update @types/node to version 14.0.1

Closes #81

Author: greenkeeper[bot]

package.json

@@ -44,7 +44,7 @@
     "@types/mkdirp": "^0.5.2",
     "@types/mustache": "^0.8.32",
     "@types/mz": "0.0.32",
-    "@types/node": "^12.7.5",
+    "@types/node": "^14.0.1",
     "@types/rimraf": "^2.0.2",
     "npm-check-updates": "^3.1.23"
   },