Bump googleauth from 1.12.2 to 1.13.0 (#20407)

Bumps [googleauth](https://github.com/googleapis/google-auth-library-ruby) from 1.12.2 to 1.13.0.
- [Release notes](https://github.com/googleapis/google-auth-library-ruby/releases)
- [Changelog](https://github.com/googleapis/google-auth-library-ruby/blob/main/CHANGELOG.md)
- [Commits](googleapis/google-auth-library-ruby@googleauth/v1.12.2...googleauth/v1.13.0)

---
updated-dependencies:
- dependency-name: googleauth
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Gemfile.lock

@@ -530,7 +530,7 @@ GEM
     google-protobuf (4.29.3)
       bigdecimal
       rake (>= 13)
-    googleauth (1.12.2)
+    googleauth (1.13.0)
       faraday (>= 1.0, < 3.a)
       google-cloud-env (~> 2.2)
       google-logging-utils (~> 0.1)