Bump pyvista from 0.38.3 to 0.38.4

Bumps [pyvista](https://github.com/pyvista/pyvista) from 0.38.3 to 0.38.4.
- [Release notes](https://github.com/pyvista/pyvista/releases)
- [Commits](pyvista/pyvista@v0.38.3...v0.38.4)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -39,7 +39,7 @@ tests = [
     "pytest==7.2.2",
     "pytest-cov==4.0.0",
     "pytest-rerunfailures==11.1.2",
-    "pyvista==0.38.3",
+    "pyvista==0.38.4",
     "vtk==9.2.6",
 ]
 doc = [
@@ -53,7 +53,7 @@ doc = [
     "pandas==1.5.3",
     "pypandoc==1.11",
     "pytest-sphinx==0.5.0",
-    "pyvista==0.38.3",
+    "pyvista==0.38.4",
     "sphinx-autobuild==2021.3.14",
     "sphinx-autodoc-typehints==1.22",
     "sphinx-copybutton==0.5.1",