Node 24 upgrade

[truittjanney]

My changes:

• package.json
• ci.yml changes for node 24
• nvmrc for specifying required node version

[iBotPeaches]

I don't think we should add an nvmrc file - it pollutes the root of the project and we can rely on the package.json.

Also, the GitHub Action is still using Node 20 - https://github.com/sourcetoad/ssh-socket-action/blob/master/action.yml#L34 so this doesn't meet that request.

Finally, Can you explain a bit about the package removal? It seems we removed actions/github, install and npm. What is reasoning behind that?

Okay, I'll add the nvmrc file back. Didn't know you wouldn't want it.

I removed 'actions/github' by accident. My 2nd commit added it back. As for 'install' and 'npm'. Asked copilot to double check my package.json to make sure what I did was correct. It said that npm is a package manager, and shouldn't be listed as a dependency, so I removed it. And that install is not used in the project and to remove what isn't used.