Update/refresh CI container images

[moreati]

• Recent distro versions
• sshd AllowEnv of ansible_ssh_args et al
• install setfacl for unprivileged become
• install runas? doas?
• Idea: tarpit sshd (e.g. on port 23), for testing connection timeout
• Idea: Restricted shell
• Idea: Posix only login shell, e.g. dash
• Idea: Non-posix login shell, e.g. fish
• ramoncerdaquiroz/mitogen-hq/mitogen #1023

[moreati]

• Arm64 images?
• BSD images? OpenSolaris? Do those exist?
• Podman vs Docker?

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Dumping ground for now https://github.com/moreati/mitogen/pull/new/issue1118

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Ansible 11 is probably the last release that the current set of runners can be used with, based on Python versions they ship. Refs #1129, #1177.

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Github pipelines ubuntu-latest will change to 24.04 by 2025-01-17 actions/runner-images#10636

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Debian 13 (trixie) is likely to be release summer 2025