Speech-to-Text has updated its pricing policy. Enhanced models are no longer priced differently than standard models

## Change Speech-to-Text has updated its pricing policy. Enhanced models are no longer priced differently than standard models. Usage of all models will be reported to and priced like standard models. Also, all Cloud Speech-to-Text requests will now be rounded up to the nearest 1 second, with no minimum audio length (requests were previously rounded up to the nearest 15 seconds). See the [Pricing](https://cloud.google.com/speech-to-text/pricing) page for details.