add stub for v1.4.3 to changelog

Author: nohn

CHANGELOG.md

@@ -1,3 +1,6 @@
+# 2026-MM-DD v1.4.3
+- ...
+
 # 2026-04-12 v1.4.2
 - Interactive configuration of coordinates for digits and gauges
 - Auto detected dark / light mode preferences using prefers-color-scheme and add a dark mode theme