Update CHANGELOG.md

Author: jbern0rd

CHANGELOG.md

@@ -25,6 +25,9 @@ All notable changes to this project will be documented in this file.
 - Upgrade to Spring Boot 2.7.14. (#544)
 - Upgrade to Spring Dependency Management Plugin 1.1.3. (#544)
 - Upgrade to `jenkins-library` 2.7.3. (#549)
+- Upgrade to `iexec-commons-poco` 3.1.0. (#551)
+- Upgrade to `iexec-common` 8.3.0. (#551)
+- Upgrade to `iexec-commons-containers` 1.1.0. (#551)
 
 ## [[8.1.4]](https://github.com/iExecBlockchainComputing/iexec-worker/releases/tag/v8.1.4) 2023-06-27