chore(deps): bump webpack from 5.74.0 to 5.76.1 in /packages/react/demo

Bumps [webpack](https://github.com/webpack/webpack) from 5.74.0 to 5.76.1.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.74.0...v5.76.1)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: indirect
...

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