Fix: Update authentik Caddy template to use HTTP backend

- Change reverse_proxy from https:// to http:// backend
- Use authentik_http_port instead of authentik_https_port
- Remove unnecessary TLS transport configuration
- Remove health check for non-existent endpoint

This aligns the Ansible template with the working configuration
where authentik only serves HTTP internally and Caddy handles SSL.

roles/authentik/defaults/main.yml

@@ -44,7 +44,7 @@ authentik_valkey_db: 1  # Use database 1 for Authentik
 
 authentik_domain: "auth.jnss.me"
 authentik_http_port: 9000
-authentik_bind_address: "0.0.0.0"
+authentik_bind_address: "127.0.0.1"
 
 # =================================================================
 # Authentik Core Configuration