Update release notes

Author: vy

src/changelog/2.23.1/.release-notes.adoc.ftl

@@ -20,6 +20,6 @@
 
 <#if release.date?has_content>Release date:: ${release.date}</#if>
 
-This releases contains ...
+This release contains several small fixes and some dependency updates.
 
 <#include "../.changelog.adoc.ftl">

src/site/_release-notes/_2.23.1.adoc

@@ -20,7 +20,7 @@
 
 Release date:: 2024-03-06
 
-This releases contains ...
+This release contains several small fixes and some dependency updates.
 
 
 [#release-notes-2-23-1-changed]