chore(deps-dev): bump happy-dom in /apps/bedrock-content-generator (#10155)

Bumps [happy-dom](https://github.com/capricorn86/happy-dom) from 6.0.4 to 20.0.0.
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](capricorn86/happy-dom@v6.0.4...v20.0.0)

---
updated-dependencies:
- dependency-name: happy-dom
  dependency-version: 20.0.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]