[highlightcode] Update bundled highlight.js package and improve language alias matching

[robertsim007]

Summary

This updates the vendored highlight.js package used by the highlightcode plugin and improves language alias matching in the picker.

The main reason for the update was to add VHDL syntax highlighting support for lab reports. The alias matching changes also make common inputs like c++, c#, yml, and sh resolve more reliably.

What changed

• updated the vendored highlight.js package to the latest bundled release with all supported languages
• improved language picker alias matching
• rebuilt the deploy package
• updated the changelog for 1.0.4

Manual verification

• VHDL highlighting
• c++ alias finds cpp
• c# alias finds csharp
• yml alias finds yaml
• sh alias finds bash
• JavaScript formatting
• TypeScript formatting
• CSS formatting
• XML formatting
• PHP formatting
• Markdown formatting

highlightcode-update-test.docx

[CLAassistant]

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