Keep npm dependencies up to date

Many of our `npm` dependencies get pinned to a certain version (see `package-lock.json`) which become outdated quickly. Those outdated version often have [security vulnerabilities](https://github.com/machine-learning-exchange/mlx/security/dependabot) that get fixed in more recent versions. However the MLX UI keeps using the pinned outdated versions.

We should try using tools like `npm-upgrade` and build that into a `Makefile` target and integrate a check for outdated (minor) versions in our CI/CD checks.

This is the first blog post I hit after googling this topic, but there are plenty more:
https://hudochenkov.com/posts/up-to-date-dependencies/

@drewbutlerbb4 -- could you take this on?