Astro Starter Kit: Basics

To reproduce the issue:

1. Run npm install
2. Run npx @astrojs/upgrade, or upgrade Astro in package.json:

   "dependencies": {
   +   "astro": "^4.4.15",
       "astro-expressive-code": "^0.26.2",
       "@expressive-code/plugin-collapsible-sections": "^0.26.2",
       "typescript": "^5.4.2"
   }

3. Change package.json to newest versions of all packages, while removing @expressive-code/plugin-collapsible-sections:

   "dependencies": {
       "astro": "^4.4.15",
   +   "astro-expressive-code": "^0.33.4",
   -   "@expressive-code/plugin-collapsible-sections": "^0.26.2",
       "typescript": "^5.4.2"
   }

4. Run npm install
5. Visit /test