muster release v5.2.0

Added

• (oauth) Check CIMD support and fall back to Dynamic Client Registration in #1084 by @teemow

Changed

• (testing) Evaluate every expectation with one implementation, for both step kinds in #1081 by @teemow

Full Changelog: https://github.com/giantswarm/muster/compare/v5.1.0...v5.2.0