srcp2-competitors: update submodule: cert, image, grading & remove -L#227

Carter90 wants to merge 1 commit intomasterBCLab-UNM/SC2:masterfrom

submodule_update_cert_image_grading_remove_localBCLab-UNM/SC2:submodule_update_cert_image_grading_remove_localCopy head branch name to clipboard