Update changelog with recent changes (#10)

CHANGELOG.md

@@ -3,6 +3,17 @@
 All notable changes to the project will be here.
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
+## [Unreleased]
+### Added
+- Get latest release and verify SHA-256 hash ([#6](https://github.com/metalbear-co/sccache-action/pull/6))
+- Disable incremental compilation by default ([#9](https://github.com/metalbear-co/sccache-action/pull/9))
+
+### Fixed
+- Stop server in post step ([#7](https://github.com/metalbear-co/sccache-action/pull/7))
+
+### Changed
+- CI test fixes and improvements ([#8](https://github.com/metalbear-co/sccache-action/pull/8))
+
 ## [1.0.2] - 2022-12-07
 
 ### Fixed
@@ -19,4 +30,4 @@ Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how
 
 ### Added
 
-- First release!
+- First release!