s3cmd: change to python3
s3cmd: change to python3

Signed-off-by: Nathan Owens <e30e4e0f03035292c2fbc2f78ada5e1c18efa352@gmail.com>

necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages