fix changelog for last release (#1258)

<!-- The PR description should answer 2 important questions: -->

### What

This PR fixes the changelog for the last release. An entry was added
accidently to the already-released version instead of the unreleased
section.

### How

By moving the changelog line.

V3_GIT_ORIGIN_REV_ID: 0d2edeea1890da90eee5d4475c78a4541b6fc7b4

v3/changelog.md

@@ -4,6 +4,9 @@
 
 ### Added
 
+- Add a check to disallow defining boolean expression of array fields with
+  scalar boolean type while resolving the boolean expression
+
 ### Fixed
 
 ### Changed
@@ -13,8 +16,6 @@
 ### Added
 
 - Support array values in session variables
-- Add a check to disallow defining boolean expression of array fields with
-  scalar boolean type while resolving the boolean expression
 
 ### Fixed