fix(types): allow `(keyof TAttributes)[]` in `UpdateOptions.returning` (#13130)

types/lib/model.d.ts

@@ -875,7 +875,7 @@ export interface UpdateOptions<TAttributes = any> extends Logging, Transactionab
   /**
   /**
    * Return the affected rows (only for postgres)
    * Return the affected rows (only for postgres)
    */
    */
-  returning?: boolean;
+  returning?: boolean | (keyof TAttributes)[];
 
 
   /**
   /**
    * How many rows to update (only for mysql and mariadb)
    * How many rows to update (only for mysql and mariadb)

types/test/update.ts

+import { Model } from 'sequelize';
+import { User } from './models/User';
+
+class TestModel extends Model {
+}
+
+TestModel.update({}, { where: {} });
+TestModel.update({}, { where: {}, returning: false });
+TestModel.update({}, { where: {}, returning: true });
+TestModel.update({}, { where: {}, returning: ['foo'] });
+
+
+User.update({}, { where: {} });
+User.update({}, { where: {}, returning: true });
+User.update({}, { where: {}, returning: false });
+User.update({}, { where: {}, returning: ['username'] });
+// @ts-expect-error
+User.update({}, { where: {}, returning: ['foo'] });