chore: sync template versions with image updates

library/compose/openwebui/template.yaml

@@ -18,9 +18,9 @@ metadata:
     GitHub: https://github.com/openwebui/openwebui
 
     '
-  version: 0.6.41
+  version: 0.6.43
   author: Christian Lempa
-  date: '2025-12-11'
+  date: '2026-01-07'
   tags:
     - traefik
     - authentik