Fix nodejs version for publish-zuul-python-branch-tarball
Fix nodejs version for publish-zuul-python-branch-tarball

Follow I485a09759124258dc24ad4be9f0e25c0e216c1e1, this job
needs a new nodejs version as well.

Change-Id: Idd94033fde624314a423057099e5688124b7c662

openstack-infra/project-config,openstack-infra/project-config