Dialogflow - March 29th, 2024 [Change, Feature]

## Change Starting on April 17, 2024, the Dialogflow CX and Dialogflow ES traffic with audio will gradually route away from the classic `phone_call` speech model to the new conformer-based speech models for the following language tags: `en-au`, `en-gb`, `de`, `de-de`, `es`, `es-es`, `es-us`, `fr`, `fr-ca`, `fr-fr`, `it`, `it-it`, `ja`, `pt-br`. For more information, see [Dialogflow ES migration documentation](https://cloud.google.com/dialogflow/es/docs/speech-model-migration-q2-2024) and [Dialogflow CX migration documentation](https://cloud.google.com/dialogflow/cx/docs/concept/speech-model-migration-q2-2024). ## Feature Dialogflow CX: You can now enable [smart endpointing](https://cloud.google.com/dialogflow/cx/docs/concept/agent#smart-endpointing).