refactor: change deprecated autocompletion to shell_complete
Before this fix, we sometimes got this warning running unit tests:
.../envs/ev-py310/lib/python3.10/site-packages/typer/core.py:304: DeprecationWarning: 'autocompletion' is renamed to 'sh>
_typer_param_setup_autocompletion_compat(self, autocompletion=autocompletion)
Also, the click documentation confirms autocompletion is deprecated:
https://click.palletsprojects.com/en/stable/changes/#version-8-0-0
