update changelog for release v0.8.4-beta [no ci]

CHANGELOG.md

@@ -4,6 +4,8 @@ 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/).
 
 ## [Unreleased]
+
+## [0.8.4-beta] - 2023-12-02
 ### Fixed
 - Fix playout builder crash with improperly configured pad filler preset
 - Properly validate filler preset mode pad to require `filler pad to nearest minute` value
@@ -1805,7 +1807,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Initial release to facilitate testing outside of Docker.
 
 
-[Unreleased]: https://github.com/ErsatzTV/ErsatzTV/compare/v0.8.3-beta...HEAD
+[Unreleased]: https://github.com/ErsatzTV/ErsatzTV/compare/v0.8.4-beta...HEAD
+[0.8.4-beta]: https://github.com/ErsatzTV/ErsatzTV/compare/v0.8.3-beta...v0.8.4-beta
 [0.8.3-beta]: https://github.com/ErsatzTV/ErsatzTV/compare/v0.8.2-beta...v0.8.3-beta
 [0.8.2-beta]: https://github.com/ErsatzTV/ErsatzTV/compare/v0.8.1-beta...v0.8.2-beta
 [0.8.1-beta]: https://github.com/ErsatzTV/ErsatzTV/compare/v0.8.0-beta...v0.8.1-beta