Update CHANGELOG.md workflow version

Author: james-toussaint

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 
 ## [[7.1.1]](https://github.com/iExecBlockchainComputing/iexec-result-proxy/releases/tag/v7.1.1) 2022-11-29
 
-* Update build workflow to 2.1.2, update documentation in README and add CHANGELOG.
+* Update build workflow to 2.1.4, update documentation in README and add CHANGELOG.
 
 ## [[7.1.0]](https://github.com/iExecBlockchainComputing/iexec-result-proxy/releases/tag/v7.1.0) 2022-07-01