Rasa

Improvements
- [12827](https://github.com/rasahq/rasa/issues/12827): Improved handling of last batch during DIET and TED training. The last batch is discarded if it contains less than half a batch size of data.
- [12835](https://github.com/rasahq/rasa/issues/12835): Added `username` to the connection parameters for `RedisLockStore` and `RedisTrackerStore`
- [1493](https://github.com/rasahq/rasa/issues/1493): Telemetry data is only send for licensed users.

No significant changes.

Bugfixes
- [12640](https://github.com/rasahq/rasa/issues/12640): Fix the issue with the most recent model not being selected if the owner or permissions where modified on the model file.

Miscellaneous internal changes
- [12648](https://github.com/rasahq/rasa/issues/12648)

Bugfixes
- [12566](https://github.com/rasahq/rasa/issues/12566): Introduce a validation step in `rasa data validate` command to identify non-existent paths and empty domains.
- [12568](https://github.com/rasahq/rasa/issues/12568): Rich responses containing buttons with parentheses characters are now correctly parsed.
Previously any characters found between the first identified pair of `()` in response button took precedence.

Miscellaneous internal changes
- [12567](https://github.com/rasahq/rasa/issues/12567)

Bugfixes
- [12467](https://github.com/rasahq/rasa/issues/12467): Fix running custom form validation to update required slots at form activation when prefilled slots consist only of slots
that are not requested by the form.

No significant changes.