update CHANGELOG

Author: maxulysse

CHANGELOG.md

@@ -24,7 +24,7 @@ Special thanks to the following for their contributions to the release:
 - [PR #1434](https://github.com/nf-core/rnaseq/pull/1434) - Default registry is quay.io for all containers
 - [PR #1437](https://github.com/nf-core/rnaseq/pull/1437) - Update software dependencies
 - [PR #1437](https://github.com/nf-core/rnaseq/pull/1437) - Remove conda from test matrix
-- [PR #1439](https://github.com/nf-core/rnaseq/pull/1439) - Further reduce matrix
+- [PR #1440](https://github.com/nf-core/rnaseq/pull/1440) - Further reduce matrix
 
 ### Software dependencies