Bump highlight.js from 10.1.0 to 10.4.1 (#71)

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) from 10.1.0 to 10.4.1.
- [Release notes](https://github.com/highlightjs/highlight.js/releases)
- [Changelog](https://github.com/highlightjs/highlight.js/blob/master/CHANGES.md)
- [Commits](highlightjs/highlight.js@10.1.0...10.4.1)

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