Bump pyvista from 0.43.8 to 0.44.1 (#700)

Bumps [pyvista](https://github.com/pyvista/pyvista) from 0.43.8 to 0.44.1.
- [Release notes](https://github.com/pyvista/pyvista/releases)
- [Commits](pyvista/pyvista@v0.43.8...v0.44.1)

---
updated-dependencies:
- dependency-name: pyvista
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/requirements_docs.txt

@@ -14,4 +14,4 @@ sphinx-gallery==0.17.1
 ansys_sphinx_theme==1.0.9
 sphinx-autodoc-typehints==2.0.0; python_version == '3.8'
 sphinx-autodoc-typehints==2.4.1; python_version >= '3.9'
-pyvista==0.43.8
+pyvista==0.44.1

requirements/requirements_test.txt

@@ -2,4 +2,4 @@ coverage==7.6.1
 pytest-cov==4.0.0
 pytest-rerunfailures==14.0
 pytest==8.3.3
-pyvista==0.43.8
+pyvista==0.44.1