Use Erlang 27 in CI for tests (backport #13552)#13553

Zerpet merged 1 commit intov4.1.xrabbitmq/rabbitmq-server:v4.1.xfrom

mergify/bp/v4.1.x/pr-13552rabbitmq/rabbitmq-server:mergify/bp/v4.1.x/pr-13552Copy head branch name to clipboard