Release 8.4.0

Author: mcornaton

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file.
 
-## [[NEXT]](https://github.com/iExecBlockchainComputing/iexec-blockchain-adapter-api/releases/tag/vNEXT) 2024
+## [[8.4.0]](https://github.com/iExecBlockchainComputing/iexec-blockchain-adapter-api/releases/tag/v8.4.0) 2024-02-29
 
 ### New Features