Allow users to target the most recently created container with
`podman update --latest` (short `-l`). The same option already exists
on many other commands, so this brings update in line with the rest of
the CLI and saves users from typing or looking up the newest container.
Fixes: #26380
Signed-off-by: Hayato Kihara <kai.21banana@gmail.com>
f21dacc4fb