update changelog for release 1.28.2

Author: SylvainJuge

CHANGELOG.asciidoc

@@ -20,8 +20,20 @@ endif::[]
 
 === Unreleased
 
+[[release-notes-1.28.3]]
+==== 1.28.3 - YYYY/MM/DD
+
+[float]
+===== Features
+
+[float]
+===== Bug fixes
+
+[[release-notes-1.x]]
+=== Java Agent version 1.x
+
 [[release-notes-1.28.2]]
-==== 1.28.2 - YYYY/MM/DD
+==== 1.28.2 - 2021/12/16
 
 [float]
 ===== Dependency updates
@@ -35,9 +47,6 @@ endif::[]
 * Fix module loading errors on J9 JVM - {pull}2341[#2341]
 * Fixing log4j configuration error - {pull}2343[#2343]
 
-[[release-notes-1.x]]
-=== Java Agent version 1.x
-
 [[release-notes-1.28.1]]
 ==== 1.28.1 - 2021/12/10