fix: update changelog for integration tests migration to GitHub Actions

Author: Le-Caignec

CHANGELOG.md

@@ -2,7 +2,8 @@
 
 ## vNEXT
 
-- Remove unused files (#42)
+- Migrate integration tests from Jenkins to GitHub Actions. (#44)
+- Remove unused files to streamline the repository. (#42)
 - Rewrite Jenkins CI for future migration (#36, #37)
 - Add a modern test stack, agnostic to the forked network. (#38)
 - Add a section in the README to explain how to use the Docker-based subgraph deployer. (#38)