happa release v1.57.1

Changes

• Update links to documentation by @kuosandys in https://github.com/giantswarm/happa/pull/4014

Other Changes

• Update date in license by @marians in https://github.com/giantswarm/happa/pull/4012

Full Changelog: https://github.com/giantswarm/happa/compare/v1.57.0...v1.57.1