The podman machine copy test "attempt copying file to a new directory"
was failing because on recent version of Windows the error message
doesn't match the expected error message. To make it work on new and
old version of Windows both old and new error messages are now
considered as valid.
Fixes https://github.com/containers/podman/issues/26056
Signed-off-by: Mario Loriedo <mario.loriedo@gmail.com>