action-shellcheck doesn't fail when shellcheck binary is not found.

[jgreat]

What happened

The job still passed as green even though the step failed to run shellcheck.

What I expected

The job to fail when shellcheck failed to run.

Details

Full Logs: https://github.com/mobilecoinofficial/full-service/actions/runs/11920706158/job/33223246794

The Installing shellcheck step failed to install shellcheck. Probably because xz-utils are not installed on the runner, that part is on me. I did expect the job to fail because the command wasn't found.

Installing shellcheck ... https://github.com/koalaman/shellcheck
  tar (grandchild): xz: Cannot exec: No such file or directory
  tar (grandchild): Error is not recoverable: exiting now
  tar: Child died with signal 13
  tar: Error is not recoverable: exiting now
  cp: cannot stat 'shellcheck-v0.10.0/shellcheck': No such file or directory
 Running shellcheck ...
  /home/runner/_work/_actions/reviewdog/action-shellcheck/v1/script.sh: line 71: shellcheck: command not found
 Running shellcheck (suggestion) ...
  /home/runner/_work/_actions/reviewdog/action-shellcheck/v1/script.sh: line 101: shellcheck: command not found