fix(engines): Define proper node version

[rozzilla]

This relates to...

When installing the last undici version (v7.0.0) on node version 20.18.1:

node:internal/modules/cjs/loader:1225
  const err = new Error(message);
              ^

Error: Cannot find module 'node:sqlite'

Rationale

The node version defined in the engines of the package.json should be updated, considering that the brand new SQLite version is available only on node >= 22.x

Changes

Updated the package.json

Features

N/A

Bug Fixes

N/A

Breaking Changes and Deprecations

I think we should communicate that undici version 7 will NOT work on node version 20.x

Status

• I have read and agreed to the Developer's Certificate of Origin
• Tested
• Benchmarked (optional)
• Documented
• Review ready
• In review
• Merge ready

[mcollina]

This loads correctly on Node.js v20, so maybe you have something odd in your setup.

[rozzilla]

I confirm this is now fixed by version 7.1.0 ✅