handle proxy username which hava semicolon would be wrong

[ZhechenLi]

when I use HttpsProxyAgent with got, and pass a proxy with some stuff like ${username};${parms}@${password} to auth a proxy. it would get 407 errors every time.

import {HttpsProxyAgent} from "hpagent";
import got from "got";

const proxyStatus = (await got("https://lumtest.com/myip.json", {
  resolveBodyOnly: true,
  agent: {
    https: new HttpsProxyAgent({
      proxy: `http://username;refreshSeconds=180:password@domain:port`,
    }),
  },
})) as unknown as {
  ip: string;
  country: string;
};

the same proxy scheme is working fine on 'http-agent' or on a python request module.