cad/PrusaSlicer: upgrade to 2.9.5 and fix with OCCT-8.0.0

Fix with OpenCASCADE 8.0.0, and since I’m there upgrade it to 2.9.5.

Release notes at
https://github.com/prusa3d/PrusaSlicer/releases/tag/version_2.9.5

PR: 295914
Approved by: teodorsigaev (maintainer)