By Nigel Hunt LONDON (Reuters) -Soybean oil prices soared to a record high on Friday as Indonesia’s decision to effectively ban exports of palm oil heightened concerns about already depleted global supplies of alternative vegetable oils. The loss of shipments from Ukraine, the world’s top supplier of sunflower oil, and drought in the world’s top soybean oil exporter Argentina had already sparked a sharp rise in global vegetable oil prices. The tightening vegetable oil supplies come as easing COVID-19 restrictions have sparked a surge in demand for food and biofuels. While oilseed crushers have…