feat(engine-js): update deps, support more languages

[slevithan]

Bumps oniguruma-to-es to v2.0.0, which adds comprehensive support for \G.

• Moves NGINX from Mismatched to Supported.
  • There are no longer any mismatched languages. 🎉✨ Languages are now either supported or not.
• Removed option rules.ignoreUnsupportedGAnchors. It no longer exists, because it's no longer useful (all \Gs are supported).
  • Despite the fact that the only remaining sample affected by the incomplete \G support was NGINX, it was a big concern of mine that, until now, ~30% of grammars still had at least one \G that was ignored. In most cases that probably meant there was at least some edge case where the highlighting would be mismatched.
  • Removing this option in this new release is a huge milestone, and means that Shiki's JS engine doesn't need the same level of warnings as before.
• As a result of the above, I removed more warnings about the JS engine. I've left in place the warning on the compatibility report page that mentions, "In some edge cases, it's not guaranteed that the highlighting will be 100% the same. If that happens, please create an issue with the sample snippet."

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