Fix lfs issue

fix: #19 (closed)

@amaclean please review

+2

I didn't see this message in the package data stage, so it must have worked:

Encountered 1 file that should have been a pointer, but wasn't:
        src/Testing/Baseline/Cxx/Rendering/TestWebGPU_PointCloudMapper.png

mentioned in commit e1128b07

merged