containerd 2.7 deprecation removals tracking issue

https://containerd.io/releases/#deprecated-features

containerd 2.7 (targeted for September 2027) is the next containerd minor which can feature any breaking changes.

Features can only be removed in a release that immediately follows an LTS release. Before upgrading, especially across multiple minor versions or to a new LTS release, users should ensure that they have addressed any deprecation warnings from their current version. This practice ensures a smoother transition and avoids issues with removed features.