fix: upgrade @types/node from 14.17.15 to 14.17.16 (#418)

Snyk has created this PR to upgrade @types/node from 14.17.15 to 14.17.16.

See this package in npm:
https://www.npmjs.com/package/@types/node

See this project in Snyk:
https://app.snyk.io/org/kpt-fn-bot/project/046a0d33-b384-4105-962d-be6f1db5074a?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

ts/demo-functions/package-lock.json

@@ -31,7 +31,7 @@
     "@types/glob": "^7.1.4",
     "@types/jasmine": "^3.9.0",
     "@types/js-yaml": "^3.12.5",
-    "@types/node": "^14.17.15",
+    "@types/node": "^14.17.16",
     "create-kpt-functions": "^0.18.0",
     "dir-compare": "^2.4.0",
     "fs-extra": "^9.0.1",