Update CHANGELOG.md

Author: jbern0rd

CHANGELOG.md

@@ -4,13 +4,13 @@ All notable changes to this project will be documented in this file.
 
 ## [[NEXT]](https://github.com/iExecBlockchainComputing/iexec-blockchain-adapter-api/releases/tag/vNEXT) 2023
 
-### New Features
-- Remove `nexus.intra.iex.ec` repository. (#96)
 ### Bug Fixes
 - Fix and harmonize `Dockerfile entrypoint` in all Spring Boot applications. (#102)
 ### Quality
+- Remove `nexus.intra.iex.ec` repository. (#96)
 - Upgrade to Gradle 8.2.1 with up-to-date plugins. (#100)
 - Clean TODOs. (#104)
+- `ChainConfig` instance is immutable and validated. Application will fail to start if chain config parameters violate constraints. (#105)
 ### Dependency Upgrades
 - Upgrade to `eclipse-temurin` 11.0.20. (#98)
 - Upgrade to Spring Boot 2.7.14. (#99)