Run `npm install` even on `--skip-cleanup`/`--yolo`

## Description If there are any `devDependencies` in package.json, it's safe to assume that they need to be installed before a release. This could be run _in all cases_ or maybe just when `node_modules` is missing or empty. **Is the feature request related to a problem?** Every few months I delete all `node_modules` from my computer to save some space on old projects. This means that when I merge PRs on GitHub and go to make a release, I have to run `np` multiple times. See also: - #784