COMP: Update CTK to fix generator expression introduced in previous commit

$ git shortlog 6dfdb85..9e8f66fd --no-merges
Jean-Christophe Fillion-Robin (1):
      Fix generator expression introduced in previous commit d779b43

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23801 3bd1e089-480b-0410-8dfb-8563597acbee