feat(core): add SCA exemption field (#6578)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/router/src/core/webhooks/utils.rs

@@ -123,6 +123,7 @@ pub async fn construct_webhook_router_data<'a>(
         additional_merchant_data: None,
         header_payload: None,
         connector_mandate_request_reference_id: None,
+        psd2_sca_exemption_type: None,
     };
     Ok(router_data)
 }