add changelog, run linter

CHANGELOG.md

@@ -38,6 +38,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed an issue in `RivaSTTService` where a runtime error occurred due to a
+  mismatch in the _handle_transcription method's signature.
+
 - Fixed multiple pipeline task cancellation issues. `asyncio.CancelledError` is
   now handled properly in `PipelineTask` making it possible to cancel an asyncio
   task that it's executing a `PipelineRunner` cleanly. Also,

src/pipecat/services/riva/stt.py

@@ -583,7 +583,9 @@ class RivaSegmentedSTTService(SegmentedSTTService):
             self._config.language_code = self._language
 
     @traced_stt
-    async def _handle_transcription(self, transcript: str, is_final: bool, language: Optional[Language] = None):
+    async def _handle_transcription(
+        self, transcript: str, is_final: bool, language: Optional[Language] = None
+    ):
         """Handle a transcription result with tracing."""
         pass