⬆️ Bump astro from 3.6.4 to 4.0.8

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 3.6.4 to 4.0.8.
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@4.0.8/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

apps/web/package.json

@@ -28,7 +28,7 @@
         "@contentful/rich-text-types": "^16.2.0",
         "@fontsource/noto-sans-jp": "^5.0.3",
         "@tailwindcss/typography": "^0.5.9",
-        "astro": "^3.4.2",
+        "astro": "^4.0.8",
         "contentful": "^10.4.0",
         "tailwindcss": "^3.3.3"
     },