update vex version to allow validation
update vex version to allow validation

stevenschlansker/Singularity,tejasmanohar/Singularity,andrhamm/Singularity,andrhamm/Singularity,stevenschlansker/Singularity,calebTomlinson/Singularity,acbellini/Singularity,acbellini/Singularity,tejasmanohar/Singularity,acbellini/Singularity,calebTomlinson/Singularity,hs-jenkins-bot/Singularity,HubSpot/Singularity,stevenschlansker/Singularity,tejasmanohar/Singularity,hs-jenkins-bot/Singularity,grepsr/Singularity,tejasmanohar/Singularity,grepsr/Singularity,grepsr/Singularity,hs-jenkins-bot/Singularity,calebTomlinson/Singularity,tejasmanohar/Singularity,hs-jenkins-bot/Singularity,andrhamm/Singularity,grepsr/Singularity,HubSpot/Singularity,stevenschlansker/Singularity,andrhamm/Singularity,tejasmanohar/Singularity,grepsr/Singularity,HubSpot/Singularity,HubSpot/Singularity,acbellini/Singularity,calebTomlinson/Singularity,calebTomlinson/Singularity,grepsr/Singularity,stevenschlansker/Singularity,stevenschlansker/Singularity,HubSpot/Singularity,calebTomlinson/Singularity,acbellini/Singularity,hs-jenkins-bot/Singularity,acbellini/Singularity,andrhamm/Singularity