build(deps): bump the js-example-deps group

Bumps the js-example-deps group in /frontend/react with 4 updates: [react](https://github.com/facebook/react/tree/HEAD/packages/react), [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom), [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/tree/HEAD/packages/plugin-react) and [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite).


Updates `react` from 18.3.1 to 19.2.3
- [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/v19.2.3/packages/react)

Updates `react-dom` from 18.3.1 to 19.2.3
- [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/v19.2.3/packages/react-dom)

Updates `@vitejs/plugin-react` from 4.7.0 to 5.1.2
- [Release notes](https://github.com/vitejs/vite-plugin-react/releases)
- [Changelog](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite-plugin-react/commits/plugin-react@5.1.2/packages/plugin-react)

Updates `vite` from 5.4.21 to 7.3.1
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v7.3.1/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v7.3.1/packages/vite)

---
updated-dependencies:
- dependency-name: react
  dependency-version: 19.2.3
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: js-example-deps
- dependency-name: react-dom
  dependency-version: 19.2.3
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: js-example-deps
- dependency-name: "@vitejs/plugin-react"
  dependency-version: 5.1.2
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: js-example-deps
- dependency-name: vite
  dependency-version: 7.3.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: js-example-deps
...

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Author: dependabot[bot]