Update the ref to vtkDICOM remote module
This brings in the latest changes from vtkDICOM upstream:
- Add SPDX information to module file
- Remove unecessary GROUPS from module file
- Allow building against namespaced VTK
- Fix warnings due to VTK deprecations
- Fix various source comment/doc typos
- Fixes to the doxygen documentation
- Fix W/L preset order for vtkMedicalImageProperties
- Update dictionary and UIDs for DICOM 2023c
Backport: release
Edited by David Gobbi