Revert "Bump versions and add changelog entries. (#2977)" (#2979)

This reverts commit 58dd04e.

Author: jack-edmonds-dd

CHANGELOG.md

@@ -1,28 +1,5 @@
 # CHANGELOG
 
-## 2.39.0/2025-07-02
-
-### Added
-* Add extractFromEmailBody step for synthetics browser test [#2956](https://github.com/DataDog/datadog-api-client-java/pull/2956)
-* Update Incident API specs to include `is_test` in `POST /incidents` and incidents response [#2945](https://github.com/DataDog/datadog-api-client-java/pull/2945)
-* Add App Key Registration API  [#2939](https://github.com/DataDog/datadog-api-client-java/pull/2939)
-* Document Cloud Cost Management GCP endpoints publicly [#2896](https://github.com/DataDog/datadog-api-client-java/pull/2896)
-* Add Monitor Template API [#2876](https://github.com/DataDog/datadog-api-client-java/pull/2876)
-
-### Changed
-* Update template variable schemas with type field in dashboards and shared dashboards endpoints for group by template variables [#2955](https://github.com/DataDog/datadog-api-client-java/pull/2955)
-* Update events intake specs for v2 Events post endpoint [#2946](https://github.com/DataDog/datadog-api-client-java/pull/2946)
-
-### Fixed
-* Synthetics mobile test `message` field is now required [#2951](https://github.com/DataDog/datadog-api-client-java/pull/2951)
-* Make dns port be string and number [#2935](https://github.com/DataDog/datadog-api-client-java/pull/2935)
-
-### Security
-* Remove caseIndex from historical jobs api spec [#2950](https://github.com/DataDog/datadog-api-client-java/pull/2950)
-
-### Deprecated
-* Deprecate SLO metadata fields in api spec [#2900](https://github.com/DataDog/datadog-api-client-java/pull/2900)
-
 ## 2.38.0/2025-06-24
 
 ### Fixed

pom.xml

@@ -4,7 +4,7 @@
     <artifactId>datadog-api-client</artifactId>
     <packaging>jar</packaging>
     <name>datadog-api-client</name>
-    <version>2.39.0</version>
+    <version>2.38.0</version>
     <url>https://github.com/DataDog/datadog-api-client-java</url>
     <description>Java client library for Datadog API</description>
     <scm>
@@ -581,13 +581,13 @@
         <dependency>
           <groupId>net.javacrumbs.json-unit</groupId>
           <artifactId>json-unit</artifactId>
-          <version>2.39.0</version>
+          <version>2.38.0</version>
           <scope>test</scope>
         </dependency>
         <dependency>
           <groupId>net.javacrumbs.json-unit</groupId>
           <artifactId>json-unit-assertj</artifactId>
-          <version>2.39.0</version>
+          <version>2.38.0</version>
           <scope>test</scope>
         </dependency>
     </dependencies>