Bump pyvista from 0.43.7 to 0.43.8 in /requirements

Bumps [pyvista](https://github.com/pyvista/pyvista) from 0.43.7 to 0.43.8.
- [Release notes](https://github.com/pyvista/pyvista/releases)
- [Commits](pyvista/pyvista@v0.43.7...v0.43.8)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements/datasets.txt

@@ -3,7 +3,7 @@ h5py==3.11.0
 laspy==2.5.3
 opencv-python==4.9.0.80
 pycocotools==2.0.7
-pyvista==0.43.7
+pyvista==0.43.8
 radiant-mlhub==0.4.1
 rarfile==4.2
 scikit-image==0.23.2