Add binaries to v23.2.21 release notes (#19430)

Author: katmayb

src/current/_data/releases.yml

@@ -8345,13 +8345,7 @@
     docker_arm_limited_access: false
   source: true
   previous_release: v23.2.20
-  cloud_only: true
-  cloud_only_message_short: 'Available only for select CockroachDB Cloud clusters'
-  cloud_only_message: >
-      This version is currently available only for select
-      CockroachDB Cloud clusters. To request to upgrade
-      a CockroachDB self-hosted cluster to this version,
-      [contact support](https://support.cockroachlabs.com/hc/requests/new).
+
 
 - release_name: v24.1.14
   major_version: v24.1