Describe the bug

Actual behavior

When I use the username/password with got, It seems that the combo 'username:password' is encoded with encodeURI() before to be encode in base64 for the basic auth. This first encoding is not necessary due to the base64 encoding and brings problems. So when the encodeURI() change a value like '@' to '%40', the basic authentification doesn't work.

Expected behavior

Just encode the combo 'username:password' with base64 encoding.

Code to reproduce

const got = require('got');

(async () => {
  const response = await got.head("http://example.com/", {username: "user@", password: "password@"});
  console.info("Response:", response.client._httpMessage._header);
}) ();

We see that the Authorization header is invalid

Checklist

• I have read the documentation.
• I have tried my code with the latest version of Node.js and Got.