[BUG] Update integration tests for Sionna v1

Sionna v1 has just been released, and they slightly changed how paths and coverage maps are computed. Moreover, they now support Python 3.12, so this should be added to the changed in the `pyproject.toml`. Ref.: - https://nvlabs.github.io/sionna/installation.html; - https://nvlabs.github.io/sionna/rt/api/paths_solvers.html; - https://nvlabs.github.io/sionna/rt/developer/dev_compat_frameworks.html. **EDIT**: apparently, XML files have changed and some scene files can no longer be loaded properly!