版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/web-vitals/4.2.3/web-vitals.attribution.iife.js
- https://cdn.bootcdn.net/ajax/libs/web-vitals/4.2.3/web-vitals.attribution.js
- https://cdn.bootcdn.net/ajax/libs/web-vitals/4.2.3/web-vitals.iife.js
- https://cdn.bootcdn.net/ajax/libs/web-vitals/4.2.3/web-vitals.js