Add 4.10.0-beta.4 to CHANGELOG

(cherry picked from commit 220650a)

Author: chriskrycho

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Ember Changelog
 
+## v4.10.0-beta.4 (December 13, 2022)
+
+- [#20321](https://github.com/emberjs/ember.js/pull/20321) [BUGFIX LTS] types: `ContainerDebugAdapter` extends `EmberObject`, not `Object`
+
 ## v4.9.2 (December 12, 2022)
 
 - [#20296](https://github.com/emberjs/ember.js/pull/20296) Controller `queryParams` should support `readonly` arrays