Bump ansys-sphinx-theme from 0.16.5 to 0.16.6 (#136)

Bumps [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) from 0.16.5 to 0.16.6.
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.16.5...v0.16.6)

---
updated-dependencies:
- dependency-name: ansys-sphinx-theme
  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>

pyproject.toml

@@ -34,7 +34,7 @@ tests = [
     "pytest-cov==5.0.0",
 ]
 doc = [
-    "ansys-sphinx-theme==0.16.5",
+    "ansys-sphinx-theme==0.16.6",
     "numpydoc==1.7.0",
     "Sphinx==7.3.7",
     "sphinx-copybutton==0.5.2",