agent-platform release v4.5.2

Fixed

• (backstage) Components.backstage.versionRange spans the Dev Portal’s 1.x and 2.x releases (>=1.0.0 <3.0.0) in #364 by @teemow

Full Changelog: https://github.com/giantswarm/agent-platform/compare/v4.5.1...v4.5.2