Dep: update node-fetch

[MattBidewell]

Fixes #506

Minor fix for CVE-2022-2596

Also added a temp fix for a type issue brought in by the latest update in node-fetch.
See: node-fetch/node-fetch#1617

First contribution, so any suggestions or things I've missed are greatly welcomed.

• Tests pass (locally)
• Appropriate changes to README are included in PR
• Types updated

[antonmedv]

This is the reason, I don't what to update node-fetch to the newest version.

Probably gonna looks for some other implementation of fetch API.

[MattBidewell]

We could use Axios or wait for Node's core fetch implementation as alternatives. Happy to help if needed 😊

[antonmedv]

@antongolub should we add dom? And make zx v8 with node's fetch?

[antonmedv]

@antongolub what are your thoughts?

[antongolub]

It's time to drop fetch polyfill, IMO. If it is still needed, it will be possible to use #498 to install

[MattBidewell]

So remove node-fetch completely and allow users to use #498 to install a fetch package on a need-to-use basis?

[MattBidewell]

I'm going to close the PR. I'll keep an eye on issues and try help when/where I can :)