Bump ansys-sphinx-theme from 0.9.5 to 0.9.6 (#351)

Bumps [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) from 0.9.5 to 0.9.6.
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.9.5...v0.9.6)

---
updated-dependencies:
- dependency-name: ansys-sphinx-theme
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: PProfizi <100710998+PProfizi@users.noreply.github.com>

requirements/requirements_docs.txt

@@ -10,5 +10,5 @@ pytest-sphinx==0.5.0
 sphinx-notfound-page==0.8.3
 sphinx-copybutton==0.5.0
 sphinx-gallery==0.12.2
-ansys_sphinx_theme==0.9.5
+ansys_sphinx_theme==0.9.6
 sphinx-autodoc-typehints==1.22