Bump the doc-dependencies group with 2 updates

Bumps the doc-dependencies group with 2 updates: [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) and [numpydoc](https://github.com/numpy/numpydoc).


Updates `ansys-sphinx-theme` from 1.6.1 to 1.6.3
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v1.6.1...v1.6.3)

Updates `numpydoc` from 1.8.0 to 1.9.0
- [Release notes](https://github.com/numpy/numpydoc/releases)
- [Changelog](https://github.com/numpy/numpydoc/blob/main/RELEASE.rst)
- [Commits](numpy/numpydoc@v1.8.0...v1.9.0)

---
updated-dependencies:
- dependency-name: ansys-sphinx-theme
  dependency-version: 1.6.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: doc-dependencies
- dependency-name: numpydoc
  dependency-version: 1.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: doc-dependencies
...

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

Author: dependabot[bot]

pyproject.toml

@@ -50,11 +50,11 @@ tests = [
     "tox==4.31.0",
 ]
 doc = [
-    "ansys-sphinx-theme==1.6.1",
+    "ansys-sphinx-theme==1.6.3",
     "autodoc_pydantic==2.2.0",
     "jupyter_sphinx==0.5.3",
     "nbsphinx==0.9.7",
-    "numpydoc==1.8.0",
+    "numpydoc==1.9.0",
     "Sphinx==8.1.3",
     "sphinx-autoapi==3.6.1",
     "sphinx-autodoc-typehints==3.0.1",