ci: use the `vtkm` for macOS runners
The existing vtk-m
tag is still there to pick up old jobs. Will retire the old tag once supported release
branches backport this change (either by becoming unmaintained or backporting this MR).
The existing vtk-m
tag is still there to pick up old jobs. Will retire the old tag once supported release
branches backport this change (either by becoming unmaintained or backporting this MR).