MAINT: Bump the doc group with 3 updates

Bumps the doc group with 3 updates: [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme), [matplotlib](https://github.com/matplotlib/matplotlib) and [pyvista](https://github.com/pyvista/pyvista).


Updates `ansys-sphinx-theme` from 0.15.1 to 0.15.2
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.15.1...v0.15.2)

Updates `matplotlib` from 3.8.3 to 3.8.4
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.8.3...v3.8.4)

Updates `pyvista` from 0.43.4 to 0.43.5
- [Release notes](https://github.com/pyvista/pyvista/releases)
- [Commits](pyvista/pyvista@v0.43.4...v0.43.5)

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

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

pyproject.toml

@@ -56,13 +56,13 @@ tests = [
 ]
 doc = [
     "Sphinx==7.2.6",
-    "ansys-sphinx-theme==0.15.1",
+    "ansys-sphinx-theme==0.15.2",
     "grpcio==1.62.1",
     "imageio-ffmpeg==0.4.9",
     "imageio==2.34.0",
     "jupyter_sphinx==0.5.3",
     "jupyterlab>=3.2.8",
-    "matplotlib==3.8.3",
+    "matplotlib==3.8.4",
     "numpy==1.26.4",
     "numpydoc==1.7.0",
     "pandas==2.2.1",
@@ -71,7 +71,7 @@ doc = [
     "pypandoc==1.13",
     "pytest-sphinx==0.6.2",
     "pythreejs==2.4.2",
-    "pyvista==0.43.4",
+    "pyvista==0.43.5",
     "sphinx-autobuild==2024.2.4",
     "sphinx-autodoc-typehints==2.0.0",
     "sphinx-copybutton==0.5.2",