Update CHANGELOG.md

Author: jbern0rd

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## [[7.2.0]](https://github.com/iExecBlockchainComputing/iexec-result-proxy/releases/tag/v7.2.0) 2023-01-09
+
+* Increments jenkins-library up to version 2.2.3. Enable SonarCloud analyses on branches and pull requests.
+
 ## [[7.1.1]](https://github.com/iExecBlockchainComputing/iexec-result-proxy/releases/tag/v7.1.1) 2022-11-29
 
 * Update build workflow to 2.1.4, update documentation in README and add CHANGELOG.