chore: sync template versions with image updates

library/compose/checkmk/template.yaml

@@ -20,9 +20,9 @@ metadata:
     Username: cmkadmin
     Password: {{ cmk_password }}
     ```
-  version: 2.4.0-latest
+  version: 2.4.0
   author: Christian Lempa
-  date: '2025-09-28'
+  date: '2025-12-10'
   tags:
     - traefik
 schema: 1.2