[v2.6.20](https://github.com/ash-project/ash_postgres/compare/v2.6.19...v2.6.20) (2025-09-27)
Bug Fixes:
* use `:mutate` repo for on_transaction_begin callback by Zach Daniel
Improvements:
* location in spark errors and migration generator fixes by Zach Daniel
* use default constraint of 'now()' for AshPostgres.Timestamptz (#621) by siassaj