Bump nbsphinx from 0.8.10 to 0.8.12 (#87)

Bumps [nbsphinx](https://github.com/spatialaudio/nbsphinx) from 0.8.10 to 0.8.12.
- [Release notes](https://github.com/spatialaudio/nbsphinx/releases)
- [Changelog](https://github.com/spatialaudio/nbsphinx/blob/master/NEWS.rst)
- [Commits](spatialaudio/nbsphinx@0.8.10...0.8.12)

---
updated-dependencies:
- dependency-name: nbsphinx
  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>

Author: dependabot[bot]

pyproject.toml

@@ -64,7 +64,7 @@ doc = [
     "sphinx-autodoc-typehints==1.19.5",
     "ansys-sphinx-theme==0.8.2",
     "pypandoc==1.10",
-    "nbsphinx==0.8.10",
+    "nbsphinx==0.8.12",
     "ipywidgets==8.0.4",
     "joblib==1.2.0",
     "scikit-learn==1.2.1",