chore(deps-dev): bump @nx/plugin from 19.6.1 to 20.1.4

Bumps [@nx/plugin](https://github.com/nrwl/nx/tree/HEAD/packages/plugin) from 19.6.1 to 20.1.4.
- [Release notes](https://github.com/nrwl/nx/releases)
- [Commits](https://github.com/nrwl/nx/commits/20.1.4/packages/plugin)

---
updated-dependencies:
- dependency-name: "@nx/plugin"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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