chore: upgrade @nuxtjs/mdc

[farnabaz]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[nuxt-studio]

✅ Live Preview ready!

Name	Edit	Preview	Latest Commit
Content	Edit on Studio ↗︎	View Live Preview	b66ccb5

[netlify]

✅ Deploy Preview for nuxt-content canceled.

Name	Link
🔨 Latest commit	5ded7c5
🔍 Latest deploy log	https://app.netlify.com/sites/nuxt-content/deploys/650870035915190008f04df1

[farnabaz]

Seems that shikiji has issue with xml language.
Reproduction:

• pnpm i
• cd docs; pnpm i
• pnpm nuxi generate

[nuxt] [request error] [unhandled] [500] No grammar provided for <source.java>                                                                                                                                                           5:54:15 PM
  at a (......../node_modules/.pnpm/shikiji@0.6.8/node_modules/shikiji/dist/core.mjs:434:15520)  

/cc @antfu

[cloudflare-pages]

Deploying with    Cloudflare Pages

Latest commit:	5ded7c5
Status:	✅  Deploy successful!
Preview URL:	https://45feab9a.nuxt-content-1il.pages.dev
Branch Preview URL:	https://chore-prepare-mdc-0-2.nuxt-content-1il.pages.dev

View logs