## Summary
- Removes `^kanidm/` from the `ghcr` remote immutable_patterns
- Adds `^kanidm/` to the `dockerhub` remote immutable_patterns
## Why
`kanidm/server` is published on Docker Hub, not ghcr.io. Pulling via the `ghcr` cache was failing with 403 on anonymous token fetch → 502 Bad Gateway.
## Test plan
- [ ] `docker pull artifactapi.k8s.syd1.au.unkin.net/dockerhub/kanidm/server:1.10.3` succeeds after artifactapi redeploys
Reviewed-on: #160
unkinben
7cbec33588