Add release notes

Author: Bruno Grazioli

release-notes.html.md.erb

@@ -1,6 +1,13 @@
 ---
 title: APC Release Notes
 ---
+## <a id='3.23.x'></a> 3.23.x
+
+Release date: 22.04.2025
+
+#### OS update only
+This platform release is based on the previous release and contains an OS (stemcell) update only.
+
 ## <a id='3.22.x'></a> 3.22.x
 
 Release date: 23.03.2025
@@ -37,16 +44,13 @@ For more information on the supported packages within the buildpack please check
 - Apt Buildpack: v0.3.9                   #[apt buildpack releases](https://github.com/cloudfoundry/apt-buildpack/releases)<br>
 
 
-
 ## <a id='3.21.x'></a> 3.21.x
 
 Release date: 18.02.2025
 
 #### OS update only
 This platform release is based on the previous release and contains an OS (stemcell) update only.
 
-
-
 ## <a id='3.20.x'></a> 3.20.x
 
 Release date: 20.01.2025