Update changelog v0.12.1 (#190)

CHANGELOG.md

@@ -37,20 +37,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## Unreleased
 
-### State Machine Breaking 
+### State Machine Breaking
 
 * [#181](https://github.com/babylonlabs-io/babylon/pull/181) Modify BTC heights
   and depths to be of uint32 type instead of uint64.
 
 ### Bug fixes
 
-* [#180](https://github.com/babylonlabs-io/babylon/pull/180) Non-determinism in
-  sorting finality providers in the voting power table
 * [#154](https://github.com/babylonlabs-io/babylon/pull/154) Fix "edit-finality-provider" cmd argument index
 
 ### Improvements
 
-* [#169](https://github.com/babylonlabs-io/babylon/pull/169) Improve external events format and update events doc
 * [#148](https://github.com/babylonlabs-io/babylon/pull/148) Add block results query
 
 ### Misc Improvements
@@ -61,6 +58,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * [#184](https://github.com/babylonlabs-io/babylon/pull/184) Remove localnet
   setup as it provides no additional testing value.
 
+## v0.12.1
+
+### Bug fixes
+
+* [#180](https://github.com/babylonlabs-io/babylon/pull/180) Non-determinism in
+  sorting finality providers in the voting power table
+
+### Improvements
+
+* [#169](https://github.com/babylonlabs-io/babylon/pull/169) Improve external events format and update events doc
+
 ### State Machine Breaking
 
 * [#185](https://github.com/babylonlabs-io/babylon/pull/185) Check that