Bump VTK
This change disables the following tests since they do not work in parallel with changes to the vtkHyperTreeGridSource to work in parallel:
- pvcs.HyperTreeGridDepthLimiter
- pvcs.HyperTreeGridThreshold
- pvcrs.HyperTreeGridDepthLimiter
- pvcrs.HyperTreeGridThreshold
These tests should be enabled again when the HTG works properly in parallel.