After T378231, we will have more head room to expand our k3s-data volume (which is currently at ~81% capacity). While we're there, we can downsize our patchdemo4-production-wikis (the volume for legacy patch-demo) as it is unlikely to grow significantly before being sunset.

The current state and desired state are here: https://docs.google.com/spreadsheets/d/1I8Ku5ENB-PxL7p4S_7K8hc19Kviqoeb73I86MzlPl_o/edit?usp=sharing

This change will require some downtime, and should either be done in an office hours or in a designated pairing session.