ENH: Use transfer.sh for macOS package upload.
ENH: Use transfer.sh for macOS package upload.

Prefer `transfer.sh` over `file.io` for macOS package upload.

InsightSoftwareConsortium/ITKMinimalPathExtraction,InsightSoftwareConsortium/ITKMinimalPathExtraction,thewtex/ITKMinimalPathExtraction,thewtex/ITKMinimalPathExtraction,InsightSoftwareConsortium/ITKMinimalPathExtraction,thewtex/ITKMinimalPathExtraction