Use correct standard peer dependencies

Replace `eslint-plugin-node` with the now used official fork `eslint-plugin-n`.

Also update to latest version of `eslint-config-standard` and its peer dependencies.

Since it can be hard for users of `eslint-plugin-node` to find out that there's a maintained fork from the official [ESLint Community project](https://github.com/eslint-community) I'm doing a drive where I'm making PR:s to some projects to raise awareness.

See: eslint-community/eslint-plugin-n#100

Disclaimer: I'm a co-maintainer of both `standard` and `eslint-plugin-n`