Bump @mdx-js/react from 2.3.0 to 3.1.1

Bumps [@mdx-js/react](https://github.com/mdx-js/mdx/tree/HEAD/packages/react) from 2.3.0 to 3.1.1.
- [Release notes](https://github.com/mdx-js/mdx/releases)
- [Changelog](https://github.com/mdx-js/mdx/blob/main/changelog.md)
- [Commits](https://github.com/mdx-js/mdx/commits/3.1.1/packages/react)

---
updated-dependencies:
- dependency-name: "@mdx-js/react"
  dependency-version: 3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -12,7 +12,7 @@
     "@fortawesome/free-brands-svg-icons": "7.0.1",
     "@fortawesome/free-solid-svg-icons": "7.0.1",
     "@fortawesome/react-fontawesome": "3.0.2",
-    "@mdx-js/react": "2.3.0",
+    "@mdx-js/react": "3.1.1",
     "darkmode-js": "1.5.7",
     "gatsby": "5.15.0",
     "gatsby-plugin-feed": "5.15.0",