chore: sync template versions with image updates

library/compose/mariadb/template.yaml

@@ -18,9 +18,9 @@ metadata:
     Username: `root` or `{{ database_user }}`
     Password: {{ database_password }}
     ```
-  version: 12.0.2
+  version: 12.2.2
   author: Christian Lempa
-  date: '2025-09-28'
+  date: '2026-02-13'
   tags: []
   draft: true
 schema: "1.2"