chore(deps-dev): bump @astrojs/mdx from 1.1.2 to 1.1.3 (#5393)

Bumps [@astrojs/mdx](https://github.com/withastro/astro/tree/HEAD/packages/integrations/mdx) from 1.1.2 to 1.1.3.
- [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@1.1.3/packages/integrations/mdx)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -58,7 +58,7 @@
   },
   "devDependencies": {
     "@astrojs/check": "^0.2.1",
-    "@astrojs/mdx": "^1.1.2",
+    "@astrojs/mdx": "^1.1.3",
     "@rollup/plugin-typescript": "^11.1.5",
     "@typescript-eslint/eslint-plugin": "^6.9.0",
     "@typescript-eslint/parser": "^6.9.0",