Bump highlight.js from 9.18.1 to 10.4.1 (#111)

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) from 9.18.1 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](https://github.com/highlightjs/highlight.js/compare/9.18.1...10.4.1)

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

package.json

@@ -72,7 +72,7 @@
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-node": "^8.0.1",
     "eslint-plugin-standard": "^4.0.0",
-    "highlight.js": "^9.13.1",
+    "highlight.js": "^10.4.1",
     "husky": "^1.1.2",
     "mini-css-extract-plugin": "^0.4.3",
     "mocha": "^5.2.0",