Update CHANGELOG.md (#19)

Author: ns-vasilev

CHANGELOG.md

@@ -1,17 +1,17 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
-## [Unreleased]
+#### 1.x Releases
+- `1.2.x` Releases - [1.2.0](#120) | [1.2.1](#121)
+- `1.1.x` Releases - [1.1.0](#110) | [1.1.1](#111)
+- `1.0.x` Releases - [1.0.0](#100)
+
+## [1.2.1](https://github.com/space-code/typhoon/releases/tag/1.2.1)
 
 #### Added
 - Mark the closures as @Sendable.
   - Added in Pull Request [#18](https://github.com/space-code/typhoon/pull/18)
 
-#### 1.x Releases
-- `1.2.x` Releases - [1.2.0](#120)
-- `1.1.x` Releases - [1.1.0](#110) | [1.1.1](#111)
-- `1.0.x` Releases - [1.0.0](#100)
-
 ## [1.2.0](https://github.com/space-code/typhoon/releases/tag/1.2.0)
 
 #### Added
@@ -50,4 +50,4 @@ Released on 2023-11-10.
 
 #### Added
 - Initial release of Typhoon.
-  - Added by [Nikita Vasilev](https://github.com/nik3212).
+  - Added by [Nikita Vasilev](https://github.com/nik3212).