update changelog (Azure#36085)

Co-authored-by: annie-mac <xinlian@microsoft.com>

Author: xinlian12

sdk/cosmos/azure-cosmos/CHANGELOG.md

@@ -10,6 +10,7 @@
 #### Bugs Fixed
 * Fixed retrying write operations when a gone exception occurs in bulk mode. - See [PR 35838](https://github.com/Azure/azure-sdk-for-java/pull/35838)
 * Fixed request start time in the `CosmosDiagnostics` for individual request responses - See [PR 35705](https://github.com/Azure/azure-sdk-for-java/pull/35705)
+* Fixed an issue where `ConnectionStateListener` tracked staled `Uris` which fails to mark the current `Uris` unhealthy properly - See [PR 36067](https://github.com/Azure/azure-sdk-for-java/pull/36067)
 
 #### Other Changes