The probability is 9/16, combining the probability of CCSS, CcSS, CCSs and CcSs. This is because the Punnett square can predict a 9:3:3:1 ratio for the phenotypes of the dominant genes of the offspring.
Green pod and smooth pod(dominant traits): 9/16
Green pod, constricted shape or yellow pod with smooth shape (one dominant, one recessive):3/16
Yellow and constricted pods (recessive traits)1/16