message: build(docs-infra): allow only Node.js v14 and above
  The AIO doc-gen uses JavaScript syntax that requires node.js 14.0.0 or above.
  Closes
  PR Close
diff: },
  "//engines-comment": "Keep this in sync with /package.json and /aio/tools/examples/shared/package.json",
  "engines": {
  - "node": "^12.20.0 || ^14.0.0",
  + "node": "^14.0.0",
  "yarn": ">=1.22.4 <2",
  "npm": "Please use yarn instead of NPM to install dependencies"
  },
  