Bump react from 18.3.1 to 19.0.0

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:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -49,7 +49,7 @@
     "colorette": "^2.0.20",
     "mocha": "^11.0.1",
     "puppeteer": "^24.0.0",
-    "react": "^18.3.1",
+    "react": "^19.0.0",
     "react-dom": "^18.3.1"
   },
   "main": "build-backend/main.js",