Update Changelog

Author: Lucccyo

CHANGES.md

@@ -1,3 +1,8 @@
+unreleased
+==========
+  + test suite
+    - Add a test to reproduce [Locate command fails on multi-line type definitions](#1987)
+
 merlin 5.6.1
 ============
 Sat Dec 20 11:15:42 CET 2025
@@ -17,7 +22,6 @@ Sat Dec 20 11:15:42 CET 2025
     - Add a test reproducing issue #1983 where `document` command which sometime concatenates consecutive variants and labels (#2005)
     - Signature-help should trigger on unfinished `let ... in` bindings (#2009)
 
-
 merlin 5.6
 ==========
 Sat Oct 04 15:10:42 CEST 2025