feat(server,web): update email address (#1186)

* feat: change email

* test: change email

mobile/openapi/test/update_user_dto_test.dart

@@ -21,6 +21,11 @@ void main() {
       // TODO
     });
 
+    // String email
+    test('to test the property `email`', () async {
+      // TODO
+    });
+
     // String password
     test('to test the property `password`', () async {
       // TODO