Add release note for version 1.2.3

Author: maninhill

README.md

@@ -84,6 +84,7 @@ docker run -d \
 - [x] 2025.09.19：[v1.2.0](https://github.com/1Panel-dev/CordysCRM/releases/tag/v1.2.0) 发布，开放 MCP Server，并完成和 MaxKB 的对接
 - [x] 2025.09.26：[v1.2.1](https://github.com/1Panel-dev/CordysCRM/releases/tag/v1.2.1) 发布
 - [x] 2025.10.11：[v1.2.2](https://github.com/1Panel-dev/CordysCRM/releases/tag/v1.2.2) 发布
+- [x] 2025.10.17：[v1.2.3](https://github.com/1Panel-dev/CordysCRM/releases/tag/v1.2.3) 发布
 - [ ] 2025.11：代码开源、正式发布
 
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