chore(deps-dev): bump postcss from 8.5.6 to 8.5.8 in /website (#148)

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.8.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.8)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

website/package-lock.json

@@ -23,7 +23,7 @@
     "autoprefixer": "^10.4.24",
     "eslint": "^9.17.0",
     "eslint-config-next": "^16.1.6",
-    "postcss": "^8.4.49",
+    "postcss": "^8.5.8",
     "tailwindcss": "^3.4.17",
     "typescript": "^5.7.2"
   }