Investors will turn to an important labor market update next week as they weigh whether simmering inflation and the potential for interest rate hikes could derail the rally in U.S. stocks. Broadcom’s results also pose a test in the coming week for the red-hot AI trade. This week, U.S. equity indexes continued their charge higher, with the benchmark S&P 500 posting a gain for a ninth straight week. The index is up more than 10% on the year, while…