Bump ansys-dpf-post from 0.3.1 to 0.4.0 (#218)

Bumps [ansys-dpf-post](https://github.com/pyansys/pydpf-post) from 0.3.1 to 0.4.0.
- [Release notes](https://github.com/pyansys/pydpf-post/releases)
- [Commits](ansys/pydpf-post@v0.3.1...v0.4.0)

---
updated-dependencies:
- dependency-name: ansys-dpf-post
  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]

pyproject.toml

@@ -29,7 +29,7 @@ dependencies = [
     "importlib-metadata>=4.0,<5; python_version<='3.8'",
     "ansys-mapdl-core==0.64.0",
     "ansys-dpf-core==0.8.0",
-    "ansys-dpf-post==0.3.1",
+    "ansys-dpf-post==0.4.0",
     "ansys-dpf-gate==0.3.1",
     "ansys-dpf-composites==0.2b2",
     "ansys-fluent-core==0.12.5",