chore(deps): update dependency @types/node to v14 (#304)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "@types/meow": "^5.0.0",
     "@types/mime": "^2.0.3",
     "@types/mocha": "^8.0.0",
-    "@types/node": "^12.7.12",
+    "@types/node": "^14.0.0",
     "@types/server-destroy": "^1.0.0",
     "@types/sinon": "^10.0.0",
     "@types/update-notifier": "^5.0.0",