DOC: Update the Gitlab banner to new VTK logo design.
Thanks to Steve Jordan, the VTK new logos are now available at: https://www.vtk.org/download/
This allows to:
- Update the Gitlab banner to new VTK logo design.
- Update the
vtkLogo.ico
icon resource. - Remove the
vtkLogo.jpg
file to avoid duplicating data, since the file is available at the above web site.
Resolves #17315 (closed)