Bump the dev-dependencies group with 7 updates

Bumps the dev-dependencies group with 7 updates:

| Package | From | To |
| --- | --- | --- |
| [@astrojs/mdx](https://github.com/withastro/astro/tree/HEAD/packages/integrations/mdx) | `0.19.1` | `4.3.1` |
| [@astrojs/react](https://github.com/withastro/astro/tree/HEAD/packages/integrations/react) | `2.2.1` | `4.3.0` |
| [@astrojs/sitemap](https://github.com/withastro/astro/tree/HEAD/packages/integrations/sitemap) | `1.3.1` | `3.4.2` |
| [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) | `2.4.5` | `5.12.5` |
| [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) | `0.14.2` | `3.8.1` |
| [unist-builder](https://github.com/syntax-tree/unist-builder) | `3.0.0` | `4.0.0` |
| [unist-util-visit](https://github.com/syntax-tree/unist-util-visit) | `4.1.0` | `5.0.0` |


Updates `@astrojs/mdx` from 0.19.1 to 4.3.1
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/integrations/mdx/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/mdx@4.3.1/packages/integrations/mdx)

Updates `@astrojs/react` from 2.2.1 to 4.3.0
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/integrations/react/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/react@4.3.0/packages/integrations/react)

Updates `@astrojs/sitemap` from 1.3.1 to 3.4.2
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/integrations/sitemap/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/sitemap@3.4.2/packages/integrations/sitemap)

Updates `astro` from 2.4.5 to 5.12.5
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG-v2.md)
- [Commits](https://github.com/withastro/astro/commits/astro@5.12.5/packages/astro)

Updates `shiki` from 0.14.2 to 3.8.1
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Commits](https://github.com/shikijs/shiki/commits/v3.8.1/packages/shiki)

Updates `unist-builder` from 3.0.0 to 4.0.0
- [Release notes](https://github.com/syntax-tree/unist-builder/releases)
- [Commits](syntax-tree/unist-builder@3.0.0...4.0.0)

Updates `unist-util-visit` from 4.1.0 to 5.0.0
- [Release notes](https://github.com/syntax-tree/unist-util-visit/releases)
- [Commits](syntax-tree/unist-util-visit@4.1.0...5.0.0)

---
updated-dependencies:
- dependency-name: "@astrojs/mdx"
  dependency-version: 4.3.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: "@astrojs/react"
  dependency-version: 4.3.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: "@astrojs/sitemap"
  dependency-version: 3.4.2
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: astro
  dependency-version: 5.12.5
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: shiki
  dependency-version: 3.8.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: unist-builder
  dependency-version: 4.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: unist-util-visit
  dependency-version: 5.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
...

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