doc: prepare release notes for 0.9.0

CHANGELOG.md

@@ -5,16 +5,16 @@ 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).
 
-## [0.9.0] - (https://github.com/porscheinformatik/weblate-spring/compare/v0.8.0...v0.9.0) - unreleased
+## [0.9.0] - (https://github.com/porscheinformatik/weblate-spring/compare/v0.8.0...v0.9.0) - 2024-09-09
 
 ### BREAKING CHANGES
 
 - Java 17 and Spring Boot 3.x is now required
 
 ### Dependencies
 
-- Spring Boot 3 (#82)
-- Update all Maven plugins
+- Spring Boot 3 (#82) and switch to current Spring Web API (#83)
+- Update all Maven plugins (#84)
 
 ## [0.8.0] - (https://github.com/porscheinformatik/weblate-spring/compare/v0.7.1...v0.8.0) - 2023-01-14