agent-platform release v4.40.0

Added

• (model-serving) The slice’s llm-d images come from the llm-d-fast/ prefix (re-layered, zstd llm-d-cuda) and the pre-pull names that image (#568) in #569 by @teemow

Full Changelog: https://github.com/giantswarm/agent-platform/compare/v4.39.0...v4.40.0