219 - updates packages version opencv-contrib-python-headless>=4.2.0.32 and PySide6>=6.5.1.1

[mxochicale]

Resolving #219

Hi @thompson318

I have updated packages version of opencv-contrib-python-headless>=4.2.0.32 and PySide6>=6.5.1.1 and unit tests look good to me:

• local unit tests

  py38: OK (57.50=setup[0.04]+cmd[0.11,57.10,0.25] seconds)
  lint: OK (15.00=setup[0.02]+cmd[14.99] seconds)
  congratulations :) (72.62 seconds)

• remote unit tests : https://github.com/SciKit-Surgery/scikit-surgeryvtk/actions/runs/5314435124

Let me know if you have any comments, otherwise, this PR should be ready to be merged to then proceed with a new release version 2.0.1

Cheers, --Miguel