Bump highlight.js from 10.1.2 to 10.4.1 (#70)

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) from 10.1.2 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@10.1.2...10.4.1)

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package.json

@@ -30,7 +30,7 @@
     "gulp-hb": "^8.0.0",
     "gulp-rename": "^1.4.0",
     "gulp-uglify": "^1.1.0",
-    "highlight.js": "^10.1.2",
+    "highlight.js": "^10.4.1",
     "jshint": "^2.11.0",
     "transfob": "^1.0.0"
   },