fix(deps): update dependency @astrojs/mdx to ^0.19.0 (#157)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

page/package.json

@@ -12,7 +12,7 @@
     "test": "astro check && tsc --noEmit"
   },
   "dependencies": {
-    "@astrojs/mdx": "^0.18.0",
+    "@astrojs/mdx": "^0.19.0",
     "@astrojs/react": "^2.0.2",
     "@astrojs/solid-js": "^2.0.2",
     "@astrojs/tailwind": "^3.0.1",