The significance of Levene's test is under 0.05, which suggests that the equal variances assumption is violated. However, since there are only two cells defined by combinations of factor levels, this is not really a conclusive test. The spread-versus-level plot shows what appears to be a relationship between the mean and standard deviation, but due to the few number of groups, this is inconclusive. Since the difference in spread, about 0.4, is small with respect to the difference in level, about 4.5, it's probably safe for you to assume that the variances are homogenous across groups.