Merge pull request #19847 from amosehiguese/update-changelog

chore(CHANGELOG): update v3.5 and v3.6 changelog to reflect Endpoint.Metadata deprecation

Author: fuweid

CHANGELOG/CHANGELOG-3.5.md

@@ -13,6 +13,7 @@ Previous change logs can be found at [CHANGELOG-3.4](https://github.com/etcd-io/
 ### Package `clientv3`
 
 - [Replace `resolver.State.Addresses` with `resolver.State.Endpoint.Addresses`](https://github.com/etcd-io/etcd/pull/19783).
+- [Deprecated the Metadata field in the Endpoint struct from the client/v3/naming/endpoints package](https://github.com/etcd-io/etcd/pull/19846).
 
 ### Dependencies
 

CHANGELOG/CHANGELOG-3.6.md

@@ -17,6 +17,7 @@ Previous change logs can be found at [CHANGELOG-3.5](https://github.com/etcd-io/
 ### Package `clientv3`
 
 - [Replace `resolver.State.Addresses` with `resolver.State.Endpoint.Addresses`](https://github.com/etcd-io/etcd/pull/19782).
+- [Deprecated the Metadata field in the Endpoint struct from the client/v3/naming/endpoints package](https://github.com/etcd-io/etcd/pull/19842).
 
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