Build(deps-dev): Bump ansys-sphinx-theme from 0.9.8 to 0.9.9 (#255)

Bumps [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) from 0.9.8 to 0.9.9.
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.9.8...v0.9.9)

---
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>

Author: dependabot[bot]

pyproject.toml

@@ -61,7 +61,7 @@ all = [
 ]
 doc = [
     "Sphinx==6.2.1", # BLOCKED BY sphinx-design - Cannot upgrade to Sphinx 7 for now
-    "ansys-sphinx-theme==0.9.8",
+    "ansys-sphinx-theme==0.9.9",
     "sphinx-copybutton==0.5.2",
     "sphinx-design==0.4.1",
 ]