chore: Update Python dev dep: Bump pytest-html from 4.1.1 to 4.2.0

Bumps [pytest-html](https://github.com/pytest-dev/pytest-html) from 4.1.1 to 4.2.0.
- [Release notes](https://github.com/pytest-dev/pytest-html/releases)
- [Changelog](https://github.com/pytest-dev/pytest-html/blob/master/docs/changelog.rst)
- [Commits](pytest-dev/pytest-html@4.1.1...4.2.0)

---
updated-dependencies:
- dependency-name: pytest-html
  dependency-version: 4.2.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]