Set VTK_USE_FUTURE_BOOL and VTK_USE_FUTURE_CONST to ON somewhere on CI
Recently, VTK gained two new build options:
- VTK_USE_FUTURE_BOOL
- VTK_USE_FUTURE_CONST
They both default to OFF. One day, hopefully, they can default to ON. If that's ever going to happen, ParaView will certainly need to be able to build against such a VTK. And so: it would be great if ParaView's CI could set them to ON for at least one buildbot.