Bump @11ty/eleventy-plugin-syntaxhighlight from 4.1.0 to 4.2.0 (h5bp#770)

Bumps [@11ty/eleventy-plugin-syntaxhighlight](https://github.com/11ty/eleventy-plugin-syntaxhighlight) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/11ty/eleventy-plugin-syntaxhighlight/releases)
- [Commits](11ty/eleventy-plugin-syntaxhighlight@v4.1.0...v4.2.0)

---
updated-dependencies:
- dependency-name: "@11ty/eleventy-plugin-syntaxhighlight"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]