chore: remove `--unsafe-perm` from CircleCI config (#22)
chore: remove `--unsafe-perm` from CircleCI config (#22)

The use of `--unsafe-perm` with `npm install` is no longer
needed because `npm install` is run as a non-root user.
googleapis/nodejs-logging-bunyan,googleapis/nodejs-logging-bunyan,googleapis/nodejs-logging-bunyan