Goldman Sachs is more confident in Microsoft after the company’s announcements at its annual Build developer conference. Analyst Kash Rangan reiterated his buy rating on Microsoft and lifted his price target by $70 to $550, which suggests the stock could gain roughly 19.8% from Monday’s close. Rangan said the four-day event, which began Monday, left him with increasing conviction in the company’s artificial intelligent investments. “We believe these investments help position Microsoft at the…