Fix changelog for v9.0.0 release

Author: JordanMartinez

CHANGELOG.md

@@ -2,8 +2,18 @@
 
 Notable changes to this project are 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]
 
+Breaking changes:
+
+New features:
+
+Bugfixes:
+
+Other improvements:
+## [v9.0.0](https://github.com/purescript-node/purescript-node-fs/releases/tag/v9.0.0) - 2023-07-19
+
 Breaking changes:
 - Remove `StatsObj` and reimplement bindings to `Stats` object (#76 by @JordanMartinez)