net/rabbitmq: Update 3.13.3 → 3.13.6

This upgrade is highly recommended to all users currently on earlier
3.13.x series and in particular between 3.13.3 and 3.13.5, inclusive.

Changelogs:
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.13.4
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.13.5
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.13.6

PR: 280565
Approved by: erlang (maintainer, timeout > 14 days)
MFH: 2024Q3