Rescue if file is already deleted

[maxkadel]

Expected behavior

If we're trying to delete a file and it's already deleted the application doesn't raise an error and doesn't re-try

Actual behavior

If the code can't delete a file that's already been removed, it raises an error (I'm not sure how this happens, but as long as the file is deleted I don't think it matters - I'm guessing that somehow there's a race condition, or multiple servers are running this against the same filesystem at the same time)

Impact of this bug

Noise in the logs, have to re-try the job.

Acceptance criteria

• If this change touches any of the files referenced in .rubocop_todo.yml create a new ticket to address the rubocop todo.
• If a file is deleted while the delete_stale_files method is being called, it does not stop the code. It does log the error.

Honeybadger link and code snippet, if applicable

https://app.honeybadger.io/projects/54497/faults/114481686

line 22 of [PROJECT_ROOT]/app/jobs/scsb_import_full_job.rb: delete_stale_files
line 3 of [PROJECT_ROOT]/app/jobs/scsb_import_full_job.rb: perform

Implementation notes, if any

Rescue from a Errno::ENOENT error, log it, and continue