Update dependency highlight.js to v11.5.1

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
highlight.js (source)	patch	11.5.0 -> 11.5.1

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Release Notes

isagalaev/highlight.js

### [`v11.5.1`](https://togithub.com/isagalaev/highlight.js/releases/11.5.1) [Compare Source](https://togithub.com/isagalaev/highlight.js/compare/11.5.0...11.5.1) Just a tiny release to hopefully fix the issues some are having with CSS not seen as having side effects with web pack, etc... *** Packaging: - (chore) explicitly set `sideEffect` for css and scss files, fixes [#​3504](https://togithub.com/isagalaev/highlight.js/issues/3504)

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