Given that everything changed in the new KasmVNC setup for the latest Linux [webtop](https://docs.linuxserver.io/images/docker-webtop), we need to upgrade the balancer again. Tasks in this ticket: - [ ] pin to a very recent [version](https://hub.docker.com/layers/jeroenwillemsen/wrongsecrets-desktop-k8s/1.12.8/images/sha256-736cd6c838d6f802de869be33a57d3a889ecb97636a73a05ba78195c6a62250a) of the webtop in our k8s manifests - [ ] update the balancer to be compatible with the webtop