chore(deps): bump json5, webpack and nuxt in /packages/noco-docs

Bumps [json5](https://github.com/json5/json5) to 2.2.2 and updates ancestor dependencies [json5](https://github.com/json5/json5), [webpack](https://github.com/webpack/webpack) and [nuxt](https://github.com/nuxt/framework). These dependencies need to be updated together.


Updates `json5` from 2.2.0 to 2.2.2
- [Release notes](https://github.com/json5/json5/releases)
- [Changelog](https://github.com/json5/json5/blob/main/CHANGELOG.md)
- [Commits](https://github.com/json5/json5/compare/v2.2.0...v2.2.2)

Updates `webpack` from 4.46.0 to 5.75.0
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.46.0...v5.75.0)

Updates `nuxt` from 2.15.7 to 3.0.0
- [Release notes](https://github.com/nuxt/framework/releases)
- [Commits](https://github.com/nuxt/framework/commits/v3.0.0)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: webpack
  dependency-type: indirect
- dependency-name: nuxt
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/noco-docs/package.json

@@ -23,6 +23,6 @@
   },
   "dependencies": {
     "@nuxt/content-theme-docs": "0.7.2",
-    "nuxt": "^2.15.2"
+    "nuxt": "^3.0.0"
   }
 }