Geo: Improve error loggin when file download fails
Errors like these are logged as INFO but it would be more useful to have them logged as warnings:
{"severity":"INFO","time":"2023-06-21T19:57:16.743Z","correlation_id":"2b70ae51d830d4b572ecb00777d30acc","class":"Geo::BlobDownloadService","gitlab_host":"GITLAB_HOST","message":"Blob download","mark_as_synced":false,"download_success":false,"bytes_downloaded":411378,"primary_missing_file":false,"download_time_s":0.725,"reason":"Error downloading file"}
Additionally, `extra_details` should also be logged for useful information along with it.