How to import Jquery in Background service worker - Manifest V3 - Chrome Extension

Question

  "manifest_version": 3,
  "background": {
    "service_worker": "background.js"
  }

I need to use Jquery in background.js. I cannot add jquery.min.js in the manifest because with the new upgrade v3 I cannot declare more than one JS in service_worker. How can I solve?

background.js

$.ajax({
   type: "POST",
   url: "https://wwww",
   data: {text: "xxx"}
});