[docs] Port changelog for 1.2.1

Author: nemesifier

CHANGES.rst

@@ -6,6 +6,17 @@ Version 1.3.0 [unreleased]
 
 Work in progress.
 
+Version 1.2.1 [2026-03-12]
+--------------------------
+
+Bugfixes
+~~~~~~~~
+
+- OpenWrt: turned output of tls_cipher to UCI list `#349
+  <https://github.com/openwisp/netjsonconfig/issues/349>`_
+- Fixed naive boolean coercion `#383
+  <https://github.com/openwisp/netjsonconfig/issues/383>`_
+
 Version 1.2.0 [2025-10-23]
 --------------------------