build(deps): bump plotly from 5.20.0 to 5.22.0 in /requirements

Bumps [plotly](https://github.com/plotly/plotly.py) from 5.20.0 to 5.22.0.
- [Release notes](https://github.com/plotly/plotly.py/releases)
- [Changelog](https://github.com/plotly/plotly.py/blob/master/CHANGELOG.md)
- [Commits](plotly/plotly.py@v5.20.0...v5.22.0)

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

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

requirements/requirements_doc.txt

@@ -3,7 +3,7 @@ git+https://github.com/ansys/pymapdl@main
 numpy==1.26.4
 nest-asyncio==1.6.0
 pandas==2.2.2
-plotly==5.20.0
+plotly==5.22.0
 pythreejs==2.4.2
 pyvista[jupyter]==0.43.6
 vtk==9.3.0