chore: modify UPDATING.md for logs table migrations (#24923)

Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com>
Co-authored-by: Evan Rusackas <evan@preset.io>

UPDATING.md

@@ -26,6 +26,7 @@ assists people when migrating to a new version.
 
 - [24939](https://github.com/apache/superset/pull/24939): Augments the foreign key constraints for the `embedded_dashboards` table to include an explicit CASCADE ON DELETE to ensure the relevant records are deleted when a dashboard is deleted. Scheduled downtime may be advised.
 - [24938](https://github.com/apache/superset/pull/24938): Augments the foreign key constraints for the `dashboard_slices` table to include an explicit CASCADE ON DELETE to ensure the relevant records are deleted when a dashboard or slice is deleted. Scheduled downtime may be advised.
+- [24911](https://github.com/apache/superset/pull/24911): Changes the column type from `TEXT` to `MediumText` in table `logs`, potentially requiring a table lock on MySQL dbs or taking some time to complete on large deployments.
 - [24657](https://github.com/apache/superset/pull/24657): Bumps the cryptography package to augment the OpenSSL security vulnerability.
 - [24628](https://github.com/apache/superset/pull/24628): Augments the foreign key constraints for the `dashboard_owner`, `report_schedule_owner`, and `slice_owner` tables to include an explicit CASCADE ON DELETE to ensure the relevant ownership records are deleted when a dataset is deleted. Scheduled downtime may be advised.
 - [24488](https://github.com/apache/superset/pull/24488): Augments the foreign key constraints for the `sql_metrics`, `sqlatable_user`, and `table_columns` tables to include an explicit CASCADE ON DELETE to ensure the relevant records are deleted when a dataset is deleted. Scheduled downtime may be advised.