chore: upgrade docusaurus to v3.0.1

[diwakergupta]

Fixes #566.

Description

This is a breaking change, for details see
https://docusaurus.io/blog/releases/3.0

1. Motivation for change?
   Docusaurus v2.x is no longer supported and will be EOL in January.

2. What was changed?
   Mostly just dependencies. Some markdown changes required to keep MDX3 happy.

Note that _commands.md is in a funky state - it's checked-in, but it is also
auto-generated. My code block PR wasn't sufficient, I had to make some more changes
locally to keep the parser happy. These need to be propagated back to stacks.js.

Checklist

• Conventional commits were used
• People were tagged for review

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
hiro-systems-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 28, 2023 5:49pm

[diwakergupta]

Build is currently failing with:

docs/references/_commands.md"
Cause: Could not parse expression with acorn
Details:
{
  "cause": {
    "pos": 3323,
    "loc": {
      "line": 90,
      "column": 16
    }
  },
  "column": 17,
  "message": "Could not parse expression with acorn",
  "line": 90,
  "name": "90:17",
  "place": {
    "line": 90,
    "column": 17,
    "offset": 3323
  },
  "reason": "Could not parse expression with acorn",
  "ruleId": "acorn",
  "source": "micromark-extension-mdx-expression",
  "url": "https://github.com/micromark/micromark-extension-mdx-expression/tree/main/packages/micromark-extension-mdx-expression#could-not-parse-expression-with-acorn"
}

I think some more changes are required to argparse.ts in stacks.js/cli

[rafaelcr]

LGTM 🏁