Build(deps): Bump ansys-sphinx-theme from 0.16.0 to 0.16.5

Bumps [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) from 0.16.0 to 0.16.5.
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.16.0...v0.16.5)

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

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

pyproject.toml

@@ -64,7 +64,7 @@ tests = [
     "pytest-cov==4.1.0",
 ]
 doc = [
-    "ansys-sphinx-theme==0.16.0",
+    "ansys-sphinx-theme==0.16.5",
     "numpydoc==1.6.0",
     "sphinx==7.3.7",
     "sphinx-copybutton==0.5.2",