Bump pyvista from 0.44.2 to 0.45.2

Bumps [pyvista](https://github.com/pyvista/pyvista) from 0.44.2 to 0.45.2.
- [Release notes](https://github.com/pyvista/pyvista/releases)
- [Commits](pyvista/pyvista@v0.44.2...v0.45.2)

---
updated-dependencies:
- dependency-name: pyvista
  dependency-version: 0.45.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -19,7 +19,7 @@ nbgitpuller==1.2.2
 nglview==3.1.4
 pystem==0.0.26
 python-ace==0.3.0
-pyvista==0.44.2
+pyvista==0.45.2
 pyxem==0.20.0
 pyxtal==1.0.8
 scanf==1.5.2