chore(deps): bump @next/mdx from 13.5.5 to 13.5.6

Bumps [@next/mdx](https://github.com/vercel/next.js/tree/HEAD/packages/next-mdx) from 13.5.5 to 13.5.6.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/commits/v13.5.6/packages/next-mdx)

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

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

sites/shared/package.json

@@ -16,7 +16,7 @@
   "scripts": {},
   "peerDependencies": {},
   "dependencies": {
-    "@next/mdx": "13.5.4",
+    "@next/mdx": "13.5.6",
     "@resvg/resvg-js": "2.4.1",
     "@tailwindcss/typography": "0.5.9",
     "Buffer": "0.0.0",

yarn.lock

@@ -1477,10 +1477,10 @@
   dependencies:
     glob "7.1.7"
 
-"@next/mdx@13.5.4":
-  version "13.5.4"
-  resolved "https://registry.yarnpkg.com/@next/mdx/-/mdx-13.5.4.tgz#3b79c6f9d96669c4b852236b62fc94fdb0e1e518"
-  integrity sha512-WYdWeDZUvX9h0BnjDtwyFy2We4ko8ox5EuglN27rCoYz1xj8fQ8KAn7reZgXwT2RX2hxUOl4eTNbXBfsrw7Gew==
+"@next/mdx@13.5.6":
+  version "13.5.6"
+  resolved "https://registry.yarnpkg.com/@next/mdx/-/mdx-13.5.6.tgz#c70c96b2f7078c312bb18a29979476b74708d382"
+  integrity sha512-2AMyCrz1SxSWNUpADyLz3RbPbq0GHrchbO7Msvg7IsH8MrTw3VYaZSI1KNa6JzZIoykwtNVSEL+uBmPZi106Jw==
   dependencies:
     source-map "^0.7.0"