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

Closes #36

Author: greenkeeper[bot]

package.json

@@ -79,7 +79,7 @@
   },
   "devDependencies": {
     "@types/mocha": "^5.2.4",
-    "@types/node": "^10.5.2",
+    "@types/node": "^14.0.6",
     "copy": "^0.3.1",
     "typescript": "^2.6.1",
     "vscode": "^1.1.6",