west: Update to zmkx-rel-20251219

Author: xingrz

config/west.yml

@@ -2,7 +2,7 @@ manifest:
   projects:
     - name: zmk
       url: https://github.com/xingrz/zmk.git
-      revision: zmkx-rel-20251219
+      revision: zmkx-rel-20251223
       clone-depth: 10
       import:
         file: app/west.yml