fix(.github): only create single failure-indicator file (#1683)
fix(.github): only create single failure-indicator file (#1683)

Before this change, find -execdir meant we were creating failure-indicator
files in the directory that had the issue. But, we were only checking the
root directory to see if the file was created.
GoogleCloudPlatform/golang-samples,GoogleCloudPlatform/golang-samples,GoogleCloudPlatform/golang-samples