chore(deps): bump @astrojs/mdx from 2.0.3 to 2.2.1

Bumps [@astrojs/mdx](https://github.com/withastro/astro/tree/HEAD/packages/integrations/mdx) from 2.0.3 to 2.2.1.
- [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/[email protected]/packages/integrations/mdx)

---
updated-dependencies:
- dependency-name: "@astrojs/mdx"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -13,7 +13,7 @@
   },
   "dependencies": {
     "@astrojs/check": "^0.4.1",
-    "@astrojs/mdx": "^2.0.3",
+    "@astrojs/mdx": "^2.2.1",
     "@astrojs/tailwind": "^5.1.0",
     "@tailwindcss/typography": "^0.5.10",
     "astro": "^4.1.1",