Fix the recommended NodeJS versions.

[confluence]

These were massively out of date.

[daikema]

Is it perhaps worth noting here that v16 is already EOL?

[daikema]

Is the idea to do this without updating anything in the code which, as mentioned in #133, seems like it can be done by modifying the package.json + .npmrc?

[confluence]

I only noticed the error in the docs. Please add the code change to this branch; it makes sense to do it at the same time.

[daikema]

Can't say that I've ever attempted to set those versions programmatically. Better to pin it at node 16 (as I think we've tested at least), or node 18 (as oldest that's not-yet-EOL)? Or does this require more conversation with other CARTA peeps first?

[confluence]

I think the minimum should be the minimum that actually works, not the minimum that is recommended. I suggest making the change, and @veggiesaurus can review it.

[daikema]

OK. So I tried adding those changes, initially with it requiring node 22, just so that it would (hopefully) fail and this is what the output of npm install looked like for me:

npm ERR! code EBADENGINE
npm ERR! engine Unsupported engine
npm ERR! engine Not compatible with your version of node/npm: [email protected]
npm ERR! notsup Not compatible with your version of node/npm: [email protected]
npm ERR! notsup Required: {"node":">=22.0.0"}
npm ERR! notsup Actual:   {"npm":"10.5.0","node":"v20.12.2"}

After that test dropped the required node to v16 and pushed.