Add SpeechmaticsTTSService and SonioxSTTService changes to changelog

CHANGELOG.md

@@ -9,6 +9,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Add support for `speaking_rate` input parameter in `GoogleHttpTTSService`.
+
+- Added `enable_speaker_diarization` and `enable_language_identification` to
+  `SonioxSTTService`.
+
+- Added `SpeechmaticsTTSService`, which uses Speechmatic's TTS API. Updated
+  examples 07a\* to use the new TTS service.
+
 - Added support for including images or audio to LLM context messages using
   `LLMContext.create_image_message()` or `LLMContext.create_image_url_message()`
   (not all LLMs support URLs) and `LLMContext.create_audio_message()`. For
@@ -220,6 +228,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Removed
 
+- Removed `enable_non_final_tokens` and `max_non_final_tokens_duration_ms` from
+  `SonioxSTTService`.
+
 - Removed the `aiohttp_session` arg from `SarvamTTSService` as it's no longer
   used.
 
@@ -1385,6 +1396,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Added `SonioxSTTService` using Soniox's STT websocket API.
+
 - Added `enable_emulated_vad_interruptions` to `LLMUserAggregatorParams`.
   When user speech is emulated (e.g. when a transcription is received but
   VAD doesn't detect speech), this parameter controls whether the emulated