docs(changelog): update CHANGELOG files for version 1.40.0

This commit adds the changelog entries for version 1.40.0 in both English and Chinese. The changes include:
- Fixes for dida365 and Notion errors
- Yuque TOC display fix
- New memos support
- Piclist filename support
- Formatting improvements to previous entries

The changelog follows the existing format and maintains consistency between both language versions.

Author: DiamondYuan

src/services/environment/common/changelog/CHANGELOG.en-US.md

@@ -1,4 +1,15 @@
+## 1.40.0
+
+`2025-06-02`
+
+- Fix dida365 error
+- Fix Yuque not showing in TOC issue
+- Support memos
+- Add filename support for piclist image hosting
+- Fix Notion error
+
 ## 1.39.0
+
 `2024-09-25`
 
 - Support BuildinAI
@@ -361,8 +372,8 @@ Thanks @Touma-Kazusa and @Okami Wong
 - 🐛 Fix crash when local is not zh-CN or en-US
 - 🐛 Fixed okText of account modal.
 - 🐛 Fix full page extension.
-- 💄 Add Icon For Setting Page.
-- 💄 Change name of notion.
+- 💄 Add Icon For Setting Page.
+- 💄 Change name of notion.
 - 🌐 Add more translate.
 
 ## 1.7.1

src/services/environment/common/changelog/CHANGELOG.zh-CN.md

@@ -1,4 +1,15 @@
+## 1.40.0
+
+`2025-06-02`
+
+- 修复 dida365 的报错
+- 修复 Yuque 不显示在 TOC 的问题
+- 支持 memos
+- 上传piclist图床增加filename
+- 修复 Notion 保存的问题
+
 ## 1.39.0
+
 `2024-09-25`
 
 - 支持 BuildinAI