//print-service:aws:down missing from shared/mise.toml teardown dependencies

[scottgerring]

Problem

The aws:down task in shared/mise.toml lists teardown dependencies for each service but does not include //print-service:aws:down. The print-service has its own aws:down task defined in print-service/mise.toml, but it won't be invoked when running the top-level mise run aws:down.

This means a deployed print-service stack is left behind when tearing down the environment.

Suggested Fix

Add "//print-service:aws:down" to the depends list in shared/mise.toml's aws:down task.

Part of #235