Releases notes EVSClient and X Val added

EVS-Client/release-note.md

 ---
 title: Release note
 subtitle: EVS Client
-toolversion: 5.12.2
-date: 2020-02-14
+toolversion: 5.12.3
+date: 2020-10-16
 author: Anne-Gaëlle BERGE
 function: Software Engineer
 customer: IHE Europe
 reference: KER1-RNO-IHE-EVS_CLIENT
 ---
+# 5.12.3
+_Release date: 2020-10-16_
+
+## Gazelle X Validation 1.4.3
+
+__Bug__
+
+* \[[XVAL-168](https://gazelle.ihe.net/jira/browse/XVAL-168)\] Unit test file uploading is not working in partitioned environment
 
 # 5.12.2
 _Release date: 2020-02-14_