## Summary of Changes
Versions >= 9 of VTK trigger the following CMake warning using CGAL's
CMakeLists
```
CMake Deprecation Warning at C:/dev/VTK-9.2.2/build/lib/cmake/vtk-9.2/vtk-use-file-deprecated.cmake:1 (message):
The `VTK_USE_FILE` is no longer used starting with 8.90.
Call Stack (most recent call first):
CMakeLists.txt:32 (include)
```
I suggest this modification of the CMakeLists of Mesh_3 examples, that
also requires moving to VTK 9 (9.0 was released in 2020).
If this modification and new requirement are validated, I can apply the
change everywhere.
## Release Management
* Affected package(s): Mesh_3 for now
* License and copyright ownership: unchanged
Sebastien Loriot
862a3b6539