§ 13. Publication of statutes requiring re-enactment and approval. Whenever the governor shall approve a statute enacted in accordance with subdivision one of section twelve of this chapter it shall be deposited with the secretary of state in accordance with section forty-two of the legislative law and shall be published and indexed in a separate part of the printed volume of the session laws for such year in the same manner as a concurrent resolution of the legislature proposing an amendment to the constitution.