Update to new client lib version

[davidanthoff]

The new client side lib version sends a new client id, and so our insider build is crashing at the moment. I'm going to merge this right away to fix that. Review after the fact would be great.

[ZacLN]

Should this continue to check against 'vscode' as well to continue to support older versions?

[davidanthoff]

I'm modestly certain that this string originates from the vscode-languageclient v7.0.0 npm package and not from VS Code itself. If that is true, we should be good because we control which version of that package we ship. I think I also bumped the min version of VS Code that we run on as well for the pkg tag stuff, so I think we should be fairly safe that this will never run with older versions.

Having said that, having both in probably also wouldn't do any harm :)