Bump ipywidgets from 7.7.0 to 7.7.1

Bumps [ipywidgets](http://ipython.org) from 7.7.0 to 7.7.1.

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

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

Author: dependabot[bot]

requirements_docs.txt

@@ -15,6 +15,6 @@ sphinx-autodoc-typehints==1.18.3
 ansys-sphinx-theme==0.4.2
 pypandoc==1.8.1
 nbsphinx==0.8.9
-ipywidgets==7.7.0
+ipywidgets==7.7.1
 joblib==1.1.0
 scikit-learn==1.1.1