The latest sparkle version is https://github.com/sparkle-project/Sparkle/releases/tag/2.5.0
While we still ship 1.24 https://invent.kde.org/packaging/craft-blueprints-kde/-/blob/master/libs/_mac/sparkle/sparkle.py
Related:

• [QA] About dialog blocks the update  #11208