docs: Updated CHANGELOG (#999)

CHANGELOG.md

@@ -4,12 +4,28 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [Unreleased]
+## [4.6.0] - 2023-12-05
+### Added
+- **`action`** slot added to Snackbar [#974](https://github.com/IgniteUI/igniteui-webcomponents/issues/974)
+- **`indicator-expanded`** slot added to Expansion panel [#982](https://github.com/IgniteUI/igniteui-webcomponents/pull/982)
+- **`toggle-icon-expanded`** slot added to Select [#983](https://github.com/IgniteUI/igniteui-webcomponents/pull/983)
+- Select, Dropdown - exposed **`selectedItem`**, **`items`** and **`groups`** getters
+
+### Changed
+- Updated the package to Lit v3
+- Components dark variants are now bound to their shadow root [#940](https://github.com/IgniteUI/igniteui-webcomponents/pull/940)
+- Components implement default sizes based on current theme [#977](https://github.com/IgniteUI/igniteui-webcomponents/pull/977)
+- Button group - changed events to non-cancellable [#984](https://github.com/IgniteUI/igniteui-webcomponents/pull/984)
+- Optimized components CSS and reduced bundle size [#972](https://github.com/IgniteUI/igniteui-webcomponents/pull/972)
+- WAI-ARIA improvements for Icon, Select, Dropdown and List components [#980](https://github.com/IgniteUI/igniteui-webcomponents/pull/980) [#983](https://github.com/IgniteUI/igniteui-webcomponents/pull/983)
 
 ### Fixed
+- Textarea missing styling parts [#944](https://github.com/IgniteUI/igniteui-webcomponents/issues/944)
+- Tree item disabled styles [#949](https://github.com/IgniteUI/igniteui-webcomponents/pull/949)
+- Snackbar removed unnecessary styles [#960](https://github.com/IgniteUI/igniteui-webcomponents/pull/960)
+- Tree item hover state visual design [#987](https://github.com/IgniteUI/igniteui-webcomponents/pull/987)
 - Calendar not keeping focus state when switching views [#992](https://github.com/IgniteUI/igniteui-webcomponents/issues/992)
 
-
 ## [4.5.0] - 2023-10-09
 ### Added
 - Text area component [#764](https://github.com/IgniteUI/igniteui-webcomponents/issues/764)
@@ -368,6 +384,7 @@ Initial release of Ignite UI Web Components
 - Ripple component
 - Switch component
 
+[4.6.0]: https://github.com/IgniteUI/igniteui-webcomponents/compare/4.5.0...4.6.0
 [4.5.0]: https://github.com/IgniteUI/igniteui-webcomponents/compare/4.4.0...4.5.0
 [4.4.0]: https://github.com/IgniteUI/igniteui-webcomponents/compare/4.3.1...4.4.0
 [4.3.1]: https://github.com/IgniteUI/igniteui-webcomponents/compare/4.3.0...4.3.1