Update DATABASE_URL in docker-compose.yml to point to langfuse database

- Changed the DATABASE_URL environment variable for the langfuse worker service to connect to the langfuse database instead of the default postgres database, ensuring proper database configuration for the application.

docker-compose.yml

@@ -168,7 +168,7 @@ services:
       clickhouse:
         condition: service_healthy
     environment: &langfuse-worker-env
-      DATABASE_URL: postgresql://postgres:${POSTGRES_PASSWORD}@postgres:5432/postgres
+      DATABASE_URL: postgresql://postgres:${POSTGRES_PASSWORD}@postgres:5432/langfuse
       SALT: ${LANGFUSE_SALT}
       ENCRYPTION_KEY: ${ENCRYPTION_KEY}
       TELEMETRY_ENABLED: ${TELEMETRY_ENABLED:-true}