doc: Added textproc/tex-markdown version 3.12.0

Author: jperkin

doc/CHANGES-2025

@@ -1,4 +1,4 @@
-$NetBSD: CHANGES-2025,v 1.7030 2025/12/04 07:48:07 adam Exp $
+$NetBSD: CHANGES-2025,v 1.7031 2025/12/04 11:05:50 jperkin Exp $
 
 Changes to the packages collection and infrastructure in 2025:
 
@@ -10193,3 +10193,4 @@ Changes to the packages collection and infrastructure in 2025:
 	Updated devel/py-cucumber-tag-expressions to 8.1.0 [adam 2025-12-04]
 	Updated devel/py-faker to 38.2.0 [adam 2025-12-04]
 	Updated devel/py-sybil to 9.3.0 [adam 2025-12-04]
+	Added textproc/tex-markdown version 3.12.0 [jperkin 2025-12-04]