Prepare changelog for release 1.39.0

Author: apmmachine

CHANGELOG.asciidoc

@@ -31,6 +31,12 @@ Use subheadings with the "=====" level for adding notes for unreleased changes:
 
 === Unreleased
 
+[[release-notes-1.x]]
+=== Java Agent version 1.x
+
+[[release-notes-1.39.0]]
+==== 1.39.0 - 2023/06/13
+
 [float]
 ===== Features
 * Capture S3 operation details as OTel attributes - {pull}3136[#3136]
@@ -44,10 +50,6 @@ Use subheadings with the "=====" level for adding notes for unreleased changes:
 * Handled an edge case where exceptions thrown by instrumentation code could escape into the application - {pull}3159[#3159]
 * Added guard to gracefully handle the presence of pre 3.0 Servlet API versions in the spring service name discovery mechanism - {pull}3172[#3172]
 
-
-[[release-notes-1.x]]
-=== Java Agent version 1.x
-
 [[release-notes-1.38.0]]
 ==== 1.38.0 - 2023/05/04
 
@@ -1657,4 +1659,4 @@ Transactions are named based on your resources (`ResourceClass#resourceMethod`).
    you will still want to set the `service_name` explicitly.
    But it helps getting started and seeing data easier,
    as there are no required configuration options anymore.
-   In the future we will most likely determine more useful application names for Servlet API-based applications.
+   In the future we will most likely determine more useful application names for Servlet API-based applications.