action: patchChangelog

Author: github-actions[bot]

CHANGELOG.md

@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+## [1.21.1-0.7.50b] - 2025-06-10
 ## [1.21.1-0.7.49a] - 2025-02-14
 
 The new ME and RS Bridge system are more or less final, but expect any last-minute changes before the final release. We will listen for any feedback and try to improve the system as much as we can!