[dev][infra][tact-sig] Updating Zuul's Default Ansible Version to Ansible v5

Just a heads up, in case you haven't seen Clark's announcement on OpenDev's service-announce ML, the default Ansible version Zuul invokes to run jobs will be changing at the end of this month: https://lists.opendev.org/pipermail/service-announce/2022-June/000041.html Feel free to reach out with any concerns. -- Jeremy Stanley