Update changelog about the changing of diagnostics settings

Author: jakitliang

changelog.md

@@ -13,6 +13,7 @@
   ```
 * `NEW` Test CLI: `--name=<testname>` `-n=<testname>`: run specify unit test
 * `FIX` Fixed the error that the configuration file pointed to by the `--configpath` option was not read and loaded.
+* `CHG` The diagnotics check of `duplicate-index` and `duplicate-set-field` features are disabled by default.
 
 ## 3.13.5
 `2024-12-20`