Update CHANGELOG.md to credit Elad Herzog for PR #1617

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Co-Authored-By: Claude <[email protected]>

Author: pinin4fjords

CHANGELOG.md

@@ -7,9 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Credits
 
+Special thanks to the following for their contributions to the release:
+
+- [Elad Herzog](https://github.com/EladH1)
+
 ### Enhancements and fixes
 
 - [PR #1608](https://github.com/nf-core/rnaseq/pull/1608) - Bump version after release 3.21.0
+- [PR #1617](https://github.com/nf-core/rnaseq/pull/1617) - Update bbmap/bbsplit module
 
 ## [[3.21.0](https://github.com/nf-core/rnaseq/releases/tag/3.21.0)] - 2025-09-18