v1.3.39
[v1.3.39](https://github.com/ash-project/ash_postgres/compare/v1.3.38...v1.3.39) (2023-08-01) Bug Fixes: * properly alter deferrability on attribute alter Improvements: * update ash * handle empty maps in migration defaults automatically * handle empty lists in migraiton defaults automatically * apply sort in subqueries properly * handle `no_attributes?` better in more places * support the new `parent/1` expr in relationships * explicitly lock the source row