docs: add changelog

kenjis · kenjis · commit 9c70a642d8c8 · 2023-03-01T15:20:28.000+09:00
diff --git a/user_guide_src/source/changelogs/v4.3.3.rst b/user_guide_src/source/changelogs/v4.3.3.rst
@@ -9,6 +9,11 @@ Release Date: Unreleased
     :local:
     :depth: 3
 
+SECURITY
+********
+
+- **Email:** Added missing TLS 1.3 support.
+
 BREAKING
 ********
 
