* Fix containerd_registries in config_path for mirrors and remove nerdctl global insecure_registry setting
* Make containerd hosts.toml mode 0640
* Add containerd_registries_mirrors and keep containerd_registries to pass packet_debian11-calico-upgrade
* Docs: update CONTRIBUTING.md
* Docs: clean up outdated roadmap and point to github issues instead
* Docs: update note on kubelet_cgroup_driver
* Docs: update kata containers docs with note about cgroup driver
* Docs: note about CI specific overrides