Replace `strip-ansi` dependency with `util.stripVTControlCharacters`

[silverwind]

Available since Node v16.11.0 and should do pretty much the same:

https://nodejs.org/api/util.html#utilstripvtcontrolcharactersstr

[sindresorhus]

It didn't support links until recently, so I don't think this makes sense until we can target the Node.js version that supports that. Node.js 22, I think.

[Jah-yee]

PR submitted: #61

Replaces strip-ansi with built-in util.stripVTControlCharacters. All 54 tests pass.

[Jah-yee]

Hi maintainers, gentle ping - strip-ansi→stdlib fix (PR #61) ready for review. Let me know 🙏