Turtlemint, a Mumbai-based insurance-technology platform, has raised $30 million in a Series D funding round led by global venture capital firm GGV Capital. Other investors American Family Ventures, MassMutual Ventures and SIG, along with existing investors Sequoia Capital India, Blume Ventures, Nexus Venture Partners, Dream Incubator and Trifecta Capital participated in the round. Founded in…