chore: the ultimate fix for repo-tools EPERM (#67)
chore: the ultimate fix for repo-tools EPERM (#67)

This PR fixes the old `repo-tools: Permission denied` issue for those tasks where it still exists, and also simplifies CircleCI configuration a bit by using YaML references in cases where they are not used yet.

This is an automated PR prepared using [github-repo-automation](https://github.com/googleapis/github-repo-automation).
googleapis/nodejs-vision,googleapis/nodejs-vision,googleapis/nodejs-vision