Add postgres changelog for 22.6.1 (#20058)

* Add postgres changelog for 22.6.1

Porting #19710 to master

* remove changelog from 22.8.0

Author: iliakur

postgres/CHANGELOG.md

@@ -12,14 +12,19 @@
 ***Fixed***:
 
 * Omit .* regex filter to avoid unnecessary work in query ([#19470](https://github.com/DataDog/integrations-core/pull/19470))
-* When collecting Postgres setttings, only trigger the activations extensions that are installed in default namespaces. ([#19694](https://github.com/DataDog/integrations-core/pull/19694))
 
 ## 22.7.0 / 2025-02-26 / Agent 7.64.0
 
 ***Added***:
 
 * Add support for Postgres 17 ([#19625](https://github.com/DataDog/integrations-core/pull/19625))
 
+## 22.6.1 / 2025-02-25
+
+***Fixed***:
+
+* When collecting Postgres setttings, only trigger the activations extensions that are installed in default namespaces. ([#19694](https://github.com/DataDog/integrations-core/pull/19694))
+
 ## 22.6.0 / 2025-02-20
 
 ***Added***: