Add support for Node 23

[ehmicky]

If --engine-strict is used, npm install fails with:

npm error code EBADENGINE
npm error engine Unsupported engine
npm error engine Not compatible with your version of node/npm: [email protected]
npm error notsup Not compatible with your version of node/npm: [email protected]
npm error notsup Required: {"node":"^18.18.0 || ^20.9.0 || ^22.0.0"}
npm error notsup Actual:   {"npm":"10.9.0","node":"v23.1.0"}

If --engine-strict is not used, a warning is printed instead, but npm install does not fail.

[webpro]

We haven't tested it on Node.js v23 yet, feel free to do so.