chore: move jest to dev dependencies

[Turbinya]

jest is a dev dependency

[vercel]

Someone is attempting to deploy a commit to a Personal Account owned by @kimlimjustin on Vercel.

@kimlimjustin first needs to authorize it.

[kimlimjustin]

I just realized that the package.json missing yargs as a dependency, IDK who broke it (probably me), I'll add it before merging this.

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[Turbinya]

Hmm. Looking through the history I did not find this package at all =) I think you forgot to add this

[kimlimjustin]

ye, added it