Replace undici with native https.request

[trivikr]

Refs: #19

Before

Warning is shown about Node.js undici on npm audit

$ npm audit | grep undici
undici  <=5.28.3
CRLF Injection in Nodejs ‘undici’ via host - https://github.com/advisories/GHSA-5r9g-qh6m-jxff
node_modules/undici

After

No warning shown about undici, as the dependency doesn't exist

$ npm audit | grep undici

[trivikr]

The Node.js native fetch, which is implemented from undici, if available without --experimental-fetch flag since Node.js 18.x

The undici dependency can be replaced with Node.js native fetch instead of https.request after #23 is merged.

[RafaelGSS]

Considering we are now targeting really old Node.js versions, I believe https should be better as fetch isn't supported on EOL versions.

[trivikr]

New PR posted at #26