message: lock CDI version to v1.20.0
diff: KUBEVIRT_VERSION=$(curl -s https://github.com/kubevirt/kubevirt/releases/latest | grep -o "v[0-9]\.[0-9]*\.[0-9]*")
  -CDI_VERSION=$(curl -s https://github.com/kubevirt/containerized-data-importer/releases/latest | grep -o "v[0-9]\.[0-9]*\.[0-9]*")
  +#CDI_VERSION=$(curl -s https://github.com/kubevirt/containerized-data-importer/releases/latest | grep -o "v[0-9]\.[0-9]*\.[0-9]*")
  +CDI_VERSION="v1.29.0"
  VIRTCTL_DOWNLOAD_URL="https://github.com/kubevirt/kubevirt/releases/download/${KUBEVIRT_VERSION}/virtctl-${KUBEVIRT_VERSION}"
  VIRTCTL_X86_64="${VIRTCTL_DOWNLOAD_URL}-linux-x86_64"
  