[npm] Bump @mui/x-data-grid from 6.19.1 to 6.19.6 in /frontend

Bumps [@mui/x-data-grid](https://github.com/mui/mui-x/tree/HEAD/packages/grid/x-data-grid) from 6.19.1 to 6.19.6.
- [Release notes](https://github.com/mui/mui-x/releases)
- [Changelog](https://github.com/mui/mui-x/blob/v6.19.6/CHANGELOG.md)
- [Commits](https://github.com/mui/mui-x/commits/v6.19.6/packages/grid/x-data-grid)

---
updated-dependencies:
- dependency-name: "@mui/x-data-grid"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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