Bump googleauth from 0.16.0 to 0.16.1
Bump googleauth from 0.16.0 to 0.16.1

Bumps [googleauth](https://github.com/googleapis/google-auth-library-ruby) from 0.16.0 to 0.16.1.
- [Release notes](https://github.com/googleapis/google-auth-library-ruby/releases)
- [Changelog](https://github.com/googleapis/google-auth-library-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/googleapis/google-auth-library-ruby/compare/google-auth-library-ruby/v0.16.0...google-auth-library-ruby/v0.16.1)

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