Added changelog for version 25.12.1.

Author: jlesage

appdefs.yml

@@ -185,6 +185,16 @@ app:
           > to `BETA`. See the [Environment Variables](#environment-variables) section for
           > more details.
   changelog:
+    - version: 25.12.1
+      date: 2025-12-07
+      changes:
+        - 'Updated baseimage to version 4.10.3, which brings the following changes:'
+        - '2:Added hardware acceleration support for the X server.'
+        - '2:Added seamless clipboard synchronization for Chromium-based browsers.'
+        - '2:Added web notification service to forward desktop notifications to the browser.'
+        - '2:Added the ability to restrict web and VNC connections from localhost only.'
+        - '2:Added web server support for TLS 1.3.'
+        - '2:Removed web server support of static Diffie-Hellman parameters file (no longer needed in modern TLS configurations and ECDHE).'
     - version: 25.10.1
       date: 2025-10-02
       changes: