CHAGELOG(3.5): Set 3.5.31 release date.

Signed-off-by: Ivan Valdes <ivan@vald.es>

Author: ivanvc

CHANGELOG/CHANGELOG-3.5.md

@@ -4,13 +4,21 @@ Previous change logs can be found at [CHANGELOG-3.4](https://github.com/etcd-io/
 
 ---
 
-## v3.5.30 (TBC)
+## v3.5.31 (TBC)
+
+---
+
+## v3.5.30 (2026-05-01)
 
 ### etcd server
 
 - [Fixed an issue that prevented adding a new member when one member was down, even though quorum was still satisfied](https://github.com/etcd-io/etcd/pull/21669)
 - Fix RBAC authorization bypass allowing read access via PrevKv or lease attachment in Put requests nested in etcd transactions (see [PR/21682](https://github.com/etcd-io/etcd/pull/21682) and [PR/21687](https://github.com/etcd-io/etcd/pull/21687))
 
+### Dependencies
+
+- Compile binaries using [go 1.25.9](https://github.com/etcd-io/etcd/pull/21587)
+
 ---
 
 ## v3.5.29 (2026-04-01)