Bump the doc-dependencies group with 2 updates (#22)

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 0.12.5 to 0.13.1
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.12.5...v0.13.1)

Updates `numpydoc` from 1.5.0 to 1.6.0
- [Release notes](https://github.com/numpy/numpydoc/releases)
- [Changelog](https://github.com/numpy/numpydoc/blob/main/doc/release_notes.rst)
- [Commits](numpy/numpydoc@v1.5.0...v1.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alex Fernandez <[email protected]>

pyproject.toml

@@ -33,8 +33,8 @@ tests = [
     "pytest-cov==4.1.0",
 ]
 doc = [
-    "ansys-sphinx-theme==0.12.5",
-    "numpydoc==1.5.0",
+    "ansys-sphinx-theme==0.13.1",
+    "numpydoc==1.6.0",
     "Sphinx==7.2.6",
     "sphinx-autoapi==3.0.0",
     "sphinx-copybutton==0.5.2",