agent-platform release v4.108.0

Added

• (connectivity) Network policies for Substrate’s bundled stores in #786 by @teemow

Fixed

• (kagent) Private-skill credential docs, verified on the pinned CRDs in #787 by @teemow

Full Changelog: https://github.com/giantswarm/agent-platform/compare/v4.107.0...v4.108.0