Prepare next dev version

Add unreleased entry to changelog.

Signed-off-by: thc202 <thc202@gmail.com>

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this GitHub action will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [Unreleased]
+
 ## [0.8.0] - 2024-09-25
 ### Changed
 - Update dependencies, which adds rate-limiting when accessing the GitHub API.
@@ -51,6 +53,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 First release to Marketplace.
 
+[Unreleased]: https://github.com/zaproxy/action-api-scan/compare/v0.8.0...HEAD
 [0.8.0]: https://github.com/zaproxy/action-api-scan/compare/v0.7.0...v0.8.0
 [0.7.0]: https://github.com/zaproxy/action-api-scan/compare/v0.6.0...v0.7.0
 [0.6.0]: https://github.com/zaproxy/action-api-scan/compare/v0.5.0...v0.6.0