Update CHANGELOG for release v4.0-beta.5

Author: at055612

CHANGELOG.md

@@ -21,6 +21,9 @@ Patch version changes will typically include cosmetic changes (e.g. _xs:document
 
 ## [Unreleased]
 
+
+## [v4.0-beta.5] - 2021-09-17
+
 * Fix version number in schema.
 
 
@@ -302,7 +305,8 @@ Patch version changes will typically include cosmetic changes (e.g. _xs:document
 
 * Initial open source release
 
-[Unreleased]: https://github.com/gchq/event-logging-schema/compare/v4.0-beta.4...HEAD
+[Unreleased]: https://github.com/gchq/event-logging-schema/compare/v4.0-beta.5...HEAD
+[v4.0-beta.5]: https://github.com/gchq/event-logging-schema/compare/v4.0-beta.4...v4.0-beta.5
 [v4.0-beta.4]: https://github.com/gchq/event-logging-schema/compare/v4.0-beta.3...v4.0-beta.4
 [v4.0-beta.3]: https://github.com/gchq/event-logging-schema/compare/v4.0-beta.2...v4.0-beta.3
 [v4.0-beta.2]: https://github.com/gchq/event-logging-schema/compare/v4.0-beta.1...v4.0-beta.2