Update S3 stub (#607)

* feat: Update S3 stub

* docs: Update changelog

CHANGELOG.md

@@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Added
+
+### Fixed
+- Fix timeout while changing the baudrate for some ESP32-S3 targets (#607)
+
+### Changed
+- Update ESP32-S3 stub (#607)
+
+### Removed
+
 ## [3.0.0-rc.2] - 2024-03-04
 
 ### Added
@@ -225,6 +237,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [1.0.0] - 2021-09-21
 
+[Unreleased]: https://github.com/esp-rs/espflash/compare/v3.0.0-rc.2...HEAD
 [3.0.0-rc.2]: https://github.com/esp-rs/espflash/compare/v3.0.0-rc.1...v3.0.0-rc.2
 [3.0.0-rc.1]: https://github.com/esp-rs/espflash/compare/v2.1.0...v3.0.0-rc.1
 [2.1.0]: https://github.com/esp-rs/espflash/compare/v2.0.1...v2.1.0