Bump @fluentui/react-components from 9.55.1 to 9.56.2 in /app/frontend

Bumps [@fluentui/react-components](https://github.com/microsoft/fluentui) from 9.55.1 to 9.56.2.
- [Release notes](https://github.com/microsoft/fluentui/releases)
- [Changelog](https://github.com/microsoft/fluentui/blob/master/azure-pipelines.release.yml)
- [Commits](https://github.com/microsoft/fluentui/compare/@fluentui/react-components_v9.55.1...@fluentui/react-components_v9.56.2)

---
updated-dependencies:
- dependency-name: "@fluentui/react-components"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]