Bump ipywidgets from 8.1.3 to 8.1.5 (#361)

Bumps [ipywidgets](https://github.com/jupyter-widgets/ipywidgets) from 8.1.3 to 8.1.5.
- [Release notes](https://github.com/jupyter-widgets/ipywidgets/releases)
- [Commits](jupyter-widgets/ipywidgets@8.1.3...8.1.5)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements_docs.txt

@@ -4,7 +4,7 @@ geovista==0.5.1
 imageio>=2.5.0
 imageio-ffmpeg==0.5.1
 ipygany==0.5.0
-ipywidgets==8.1.3
+ipywidgets==8.1.5
 jupyter_sphinx==0.5.3
 jupyterlab==4.2.5
 lxml==5.3.0