Firebird

### New features

- Add new setting `AllowUpdateOverwrite` that defines how `UPDATE` operation should handle the case when a record was updated by trigger ([#8957](https://github.com/FirebirdSQL/firebird/pull/8957))
- Add API method `Util::convert` ([#8761](https://github.com/FirebirdSQL/firebird/issues/8761))

### Improvements

- Add limit for max value of `-PARALLEL` switch value when restoring a database ([#8928](https://github.com/FirebirdSQL/firebird/issues/8928))
- Update Windows distributions with _zlib_ version 1.3.2 ([#8922](https://github.com/FirebirdSQL/firebird/issues/8922))
- Context variables clear/re-initialization support ([#8912](https://github.com/FirebirdSQL/firebird/issues/8912))
- 'invalid request BLR' puts actual error (and procedure where it happened) at the end where it is truncated by ISC API ([#8895](https://github.com/FirebirdSQL/firebird/issues/8895))
- Ensure sequences are replicated even if changed in de-facto read-only transactions ([#8858](https://github.com/FirebirdSQL/firebird/pull/8858))
- Early diagnostics for the improperly re-initialized replica ([#8767](https://github.com/FirebirdSQL/firebird/pull/8767))
- Allow `isc_tpb_read_cons