chore(release): Update changelog and package version [skip ci]

Author: Apify Release Bot

CHANGELOG.md

@@ -2,8 +2,7 @@
 
 All notable changes to this project will be documented in this file.
 
-<!-- git-cliff-unreleased-start -->
-## 1.2.1 - **not yet released**
+## [1.2.1](https://github.com/apify/crawlee-python/releases/tag/v1.2.1) (2025-12-16)
 
 ### 🐛 Bug Fixes
 
@@ -13,7 +12,6 @@ All notable changes to this project will be documented in this file.
 - Protect `Request` from partial mutations on request handler failure ([#1585](https://github.com/apify/crawlee-python/pull/1585)) ([a69caf8](https://github.com/apify/crawlee-python/commit/a69caf87edecc755287c53c8cc0ca4725af5d411)) by [@Mantisus](https://github.com/Mantisus), closes [#1514](https://github.com/apify/crawlee-python/issues/1514)
 
 
-<!-- git-cliff-unreleased-end -->
 ## [1.2.0](https://github.com/apify/crawlee-python/releases/tag/v1.2.0) (2025-12-08)
 
 ### 🚀 Features