pohly: master: update release-tools

JobBuild
188
11-04 18:27
pull-kubernetes-csi-external-snapshotter-1-14-on-kubernetes-1-14 1195033691911360514 1193988701307277312 1191421585207070721
pull-kubernetes-csi-external-snapshotter-1-15-on-kubernetes-1-15 1195033691911360512 1193988701311471616 1191421585207070720
pull-kubernetes-csi-external-snapshotter-1-16-on-kubernetes-1-16 1193988701311471617
pull-kubernetes-csi-external-snapshotter-unit 1195033691911360513 1193988701311471618 1191421585202876417