Salla, a Saudi Arabian software startup, raised $130 million from investors including the alternative asset manager Investcorp in what’s likely to be its last funding round ahead of a planned listing.Sanabil, a unit of the kingdom’s sovereign wealth fund, and venture capital firm STV also participated in the fundraising, according to a statement from Investcorp. STV had previously backed Salla, which offers software for e-commerce firms to build websites and handle online payments....