Bump ansys-mapdl-reader from 0.52.19 to 0.52.20

Bumps [ansys-mapdl-reader](https://github.com/pyansys/pymapdl-reader) from 0.52.19 to 0.52.20.
- [Release notes](https://github.com/pyansys/pymapdl-reader/releases)
- [Commits](ansys/pymapdl-reader@v0.52.19...v0.52.20)

---
updated-dependencies:
- dependency-name: ansys-mapdl-reader
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -73,7 +73,7 @@ tests = [
 doc = [
     "sphinx==7.1.1",
     "ansys-dpf-core==0.9.0",
-    "ansys-mapdl-reader==0.52.19",
+    "ansys-mapdl-reader==0.52.20",
     "ansys-sphinx-theme==0.10.0",
     "grpcio==1.51.1",
     "imageio-ffmpeg==0.4.8",