chore(package): update @types/node to version 14.0.6

Closes #49

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
   "devDependencies": {
     "@types/jest": "^24.0.15",
     "@types/lodash": "^4.14.135",
-    "@types/node": "^12.0.10",
+    "@types/node": "^14.0.6",
     "commitizen": "^3.1.1",
     "cz-conventional-changelog": "^2.0.0",
     "danger": "9.1.8",