chore(package): update @types/node to version 14.0.8

Closes #45

Author: greenkeeper[bot]

package.json

@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^25.1.3",
-    "@types/node": "^13.1.0",
+    "@types/node": "^14.0.8",
     "commitizen": "^3.0.7",
     "cz-conventional-changelog": "^2.1.0",
     "execa": "^4.0.0",