docs: update CHANGELOG for v2.1.0 release (#193)

Author: kddejong

CHANGELOG.md

@@ -4,6 +4,28 @@ All notable changes to this project will be documented in this file. See [standa
 
 ## [Unreleased]
 
+## [2.1.0] - 2026-04-01
+
+### Features
+
+- **ROLLBACK_COMPLETE Recovery**: Automatically delete and recreate stacks stuck in `ROLLBACK_COMPLETE` state (#107, #191)
+
+### Chore
+
+- **Node.js 24**: Upgraded action runtime from Node.js 20 to Node.js 24 (#184, #192)
+- Updated CI workflow to use Node.js 24 and latest action versions
+
+### Dependencies
+
+- Bump undici from 6.23.0 to 6.24.0 (#185)
+- Bump fast-xml-parser and @aws-sdk/client-cloudformation (#183)
+- Bump minimatch (#181)
+- Bump flatted from 3.3.3 to 3.4.2 (#186)
+- Bump picomatch (#188)
+- Bump handlebars from 4.7.8 to 4.7.9 (#189)
+
+## [2.0.0] - 2026-02-02
+
 ### Features
 
 - **Enhanced Change Set Support**: Added three-mode operation for better change set management