Review resource usage of Plantuml
We have a plantuml / kube_container_memory potential saturation Tamland alert. Let's review the Plantuml resource usage and see if we can adjust things.
This is a placeholder issue to allow us to include on the Delivery board. Please keep this issue, as well as https://gitlab.com/gitlab-com/gl-infra/capacity-planning/-/issues/224 updated with progress.