chore: use the extracted stringify-package module

[dpogue]

stringify-package has been extracted into its own module.

Not sure if I should be committing the stringify-package folder under node_modules and adding it to bundledDependencies as well?

[zkat]

@dpogue In order to add a dependency, you need to:

1. npm install -B <dep> (-B bundles it)
2. git add -A node_modules package.json package-lock.json
3. git commit

We keep all our deps in the repo.

[dpogue]

Thanks @zkat. Updated to bundle the dependency and now all the CI tests are green :)

[zkat]

Nice! Thanks for taking care of that. This lgtm and I think we're gtg!