Fix Novu API import error

supabase/functions/create-novu-subscriber/index.ts

@@ -1,5 +1,5 @@
 import { serve } from "https://deno.land/std@0.168.0/http/server.ts";
-import { Novu } from "npm:@novu/api@0.0.7";
+import { Novu } from "npm:@novu/api@1.6.0";
 
 // TODO: In production, restrict CORS to specific domains
 // For now, allowing all origins for development flexibility
@@ -21,9 +21,8 @@ serve(async (req) => {
       throw new Error('NOVU_API_KEY is not configured');
     }
 
-    const novu = new Novu({
-      apiKey: novuApiKey,
-      baseURL: Deno.env.get('VITE_NOVU_API_URL') || 'https://api.novu.co',
+    const novu = new Novu({ 
+      secretKey: novuApiKey 
     });
 
     // Parse and validate request body