Bump nth-check and @slorber/static-site-generator-webpack-plugin

Bumps [nth-check](https://github.com/fb55/nth-check) and [@slorber/static-site-generator-webpack-plugin](https://github.com/slorber/static-site-generator-webpack-plugin). These dependencies needed to be updated together.

Updates `nth-check` from 1.0.2 to 2.0.1
- [Release notes](https://github.com/fb55/nth-check/releases)
- [Commits](fb55/nth-check@v1.0.2...v2.0.1)

Updates `@slorber/static-site-generator-webpack-plugin` from 4.0.4 to 4.0.7
- [Release notes](https://github.com/slorber/static-site-generator-webpack-plugin/releases)
- [Changelog](https://github.com/slorber/static-site-generator-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/slorber/static-site-generator-webpack-plugin/commits/4.0.7)

---
updated-dependencies:
- dependency-name: nth-check
  dependency-type: indirect
- dependency-name: "@slorber/static-site-generator-webpack-plugin"
  dependency-type: indirect
...

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Author: dependabot[bot]