ENH: Add ARM sources to libpng update from upstream script
ENH: Add ARM sources to libpng update from upstream script

These are used for Apple Silicon systems.

LucasGandel/ITK,LucasGandel/ITK,Kitware/ITK,richardbeare/ITK,LucasGandel/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,vfonov/ITK,BRAINSia/ITK,LucasGandel/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,richardbeare/ITK,richardbeare/ITK,hjmjohnson/ITK,Kitware/ITK,LucasGandel/ITK,BRAINSia/ITK,vfonov/ITK,Kitware/ITK,thewtex/ITK,hjmjohnson/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,hjmjohnson/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,vfonov/ITK,BRAINSia/ITK,hjmjohnson/ITK,LucasGandel/ITK,Kitware/ITK,vfonov/ITK,BRAINSia/ITK,hjmjohnson/ITK,LucasGandel/ITK,thewtex/ITK,vfonov/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK,Kitware/ITK,Kitware/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,LucasGandel/ITK,thewtex/ITK,thewtex/ITK,hjmjohnson/ITK,hjmjohnson/ITK,vfonov/ITK,richardbeare/ITK,richardbeare/ITK,vfonov/ITK,thewtex/ITK