Update 3.8.32 release notes

(cherry picked from commit 65e5825)

Author: michaelklishin

release-notes/3.8.32.md

@@ -55,6 +55,9 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
    GitHub issue: [#4799](https://github.com/rabbitmq/rabbitmq-server/issues/4799)
 
 #### Bug Fixes
+ * CLI tools failed to run on Erlang 25 because of an old version of Elixir (compiled on Erlang 21)
+   was used in the release pipeline. Erlang 25 no longer loads modules
+   compiled on Erlang 21 or older.
 
  * `rabbitmqctl set_log_level` documentation clarification.