Update 4.0.0.md

(cherry picked from commit 8061419)

Author: michaelklishin

release-notes/4.0.0.md

@@ -83,10 +83,10 @@ TBD
 
 ### Dependency Changes
 
- * Ra was [upgraded to `2.13.1`](https://github.com/rabbitmq/ra/releases)
+ * Ra was [upgraded to `2.13.3`](https://github.com/rabbitmq/ra/releases)
  * Khepri was [upgraded to `0.14.0`](https://github.com/rabbitmq/khepri/releases)
 
 ## Source Code Archives
 
-To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-4.0.0-beta.1.tar.xz`
+To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-4.0.0-beta.2.tar.xz`
 instead of the source tarball produced by GitHub.