docs: add 4.9.4 changelog (#28376)

* add 4.9.3 changelog

* fix typo

* Update CHANGELOG.zh-CN.md

Co-authored-by: 偏右 <afc163@gmail.com>

* Update CHANGELOG.en-US.md

Co-authored-by: 偏右 <afc163@gmail.com>

Co-authored-by: 偏右 <afc163@gmail.com>

CHANGELOG.en-US.md

@@ -15,6 +15,14 @@ timeline: true
 
 ---
 
+## 4.9.4
+
+- 🐞 Fix Menu delayed hover color transition in Chrome. [#28372](https://github.com/ant-design/ant-design/pull/28372)
+- 🐞 Fix Tree node connection line position problem. [#28354](https://github.com/ant-design/ant-design/pull/28354) [@maksnester](https://github.com/maksnester)
+- 💄 Fix Table fixed column `z-index` which makes Dropdown not showing on top. [#28346](https://github.com/ant-design/ant-design/pull/28346)
+- TypeScript
+  - 🤖 Fix `message.loading()` return type. [#28362](https://github.com/ant-design/ant-design/pull/28362)
+
 ## 4.9.3
 
 `2020-12-14`

CHANGELOG.zh-CN.md

@@ -15,6 +15,14 @@ timeline: true
 
 ---
 
+## 4.9.4
+
+- 🐞 修复 Menu 在 Chrome 下 hover 色延迟变化的问题。[#28372](https://github.com/ant-design/ant-design/pull/28372)
+- 🐞 修复 Tree 的节点连接线在滚动时位置偏移的问题。[#28354](https://github.com/ant-design/ant-design/pull/28354) [@maksnester](https://github.com/maksnester)
+- 💄 修复 Table 固定列 `z-index` 样式让 Dropdown 无法展示在最顶层的问题。[#28346](https://github.com/ant-design/ant-design/pull/28346)
+- TypeScript
+  - 🤖 修复 `message.loading()` 返回函数的定义。[#28362](https://github.com/ant-design/ant-design/pull/28362)
+
 ## 4.9.3
 
 `2020-12-14`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "antd",
-  "version": "4.9.3",
+  "version": "4.9.4",
   "description": "An enterprise-class UI design language and React components implementation",
   "title": "Ant Design",
   "keywords": [