Support for RabbitMQ 3.13.x

[mvoelker]

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Is your feature request related to a problem? Please describe.

The rabbitmq-delayed-message-exchange plugin does not list 3.13 as supported version yet. Version 3.13 of RabbitMQ-Server released recently. Running e.g. apt-upgrade would lead to problems / incompatibility.

Describe the solution you'd like

Please add version 3.13.x to the list of supported version.

Describe alternatives you've considered

No response

Additional context

No response