Bump pyvista from 0.41.1 to 0.42.2 in /requirements

Bumps [pyvista](https://github.com/pyvista/pyvista) from 0.41.1 to 0.42.2.
- [Release notes](https://github.com/pyvista/pyvista/releases)
- [Commits](pyvista/pyvista@v0.41.1...v0.42.2)

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

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

requirements/requirements_doc.txt

@@ -4,7 +4,7 @@ imageio==2.31.3
 nest-asyncio==1.5.7
 notfound==1.0.2
 pypandoc==1.11
-pyvista==0.41.1
+pyvista==0.42.2
 sphinx-copybutton==0.5.2
 sphinx-gallery==0.14.0
 sphinx-notfound-page==1.0.0