muster release v5.43.0

Added

• (mcpserver) Set a display name on create and update in #1518 by @marians

Fixed

• (auth) Sign in again when the server rejects a locally unexpired token in #1521 by @teemow

Full Changelog: https://github.com/giantswarm/muster/compare/v5.42.3...v5.43.0