build(deps): bump ipywidgets from 8.0.4 to 8.1.1

Bumps [ipywidgets](https://github.com/jupyter-widgets/ipywidgets) from 8.0.4 to 8.1.1.
- [Release notes](https://github.com/jupyter-widgets/ipywidgets/releases)
- [Commits](jupyter-widgets/ipywidgets@8.0.4...8.1.1)

---
updated-dependencies:
- dependency-name: ipywidgets
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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