Move CHANGELOG log entry from 0.0.81 to Unreleased

CHANGELOG.md

@@ -7,13 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-### Fixed
-
-- Fixed a `CartesiaTTSService` issue that was causing the application to hang
-  after Cartesia's 5 minutes timed out.
-
-## [0.0.81] - 2025-08-25
-
 ### Added
 
 - Added a new "universal" (LLM-agnostic) `LLMContext` and accompanying
@@ -43,6 +36,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `OpenAILLMService`
   - `GoogleLLMService`
 
+### Fixed
+
+- Fixed a `CartesiaTTSService` issue that was causing the application to hang
+  after Cartesia's 5 minutes timed out.
+
+## [0.0.81] - 2025-08-25
+
+### Added
+
 - Added `pipecat.extensions.voicemail`, a module for detecting voicemail vs.
   live conversation, primarily intended for use in outbound calling scenarios.
   The voicemail module is optimized for text LLMs only.