BaseOutputTransport/DailyTransport: allow sending DTMF keypress

CHANGELOG.md

@@ -9,6 +9,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- It is now possible to push `OutputDTMFFrame` or `OutputDTMFUrgentFrame` with
+  `DailyTransport`. This will be sent properly if a Daily dial-out connection
+  has been established.
+
 - Added `OutputDTMFUrgentFrame` to send a DTMF keypress quickly. The previous
   `OutputDTMFFrame` queues the keypress with the rest of data frames.
 
@@ -16,6 +20,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   `DailyTransport.stop_transcription()` to be able to start and stop Daily
   transcription dynamically (maybe with different settings).
 
+### Deprecated
+
+- `DailyTransport.send_dtmf()` is deprecated, push an `OutputDTMFFrame` or an
+  `OutputDTMFUrgentFrame` instead.
+
 ### Fixed
 
 - In `AWSBedrockLLMService`, worked around a possible bug in AWS Bedrock where