chore(npm): bump react from 18.3.1 to 19.0.0 in /Website

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 18.3.1 to 19.0.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react)

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

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

Website/package.json

@@ -15,7 +15,7 @@
     "eslint-config-next": "15.0.4",
     "next": "15.0.4",
     "postcss": "8.4.49",
-    "react": "18.3.1",
+    "react": "19.0.0",
     "react-dom": "18.3.1",
     "remark": "^15.0.1",
     "remark-html": "^16.0.1",