Update googleauth requirement from >= 0.16.2, < 1.3.0 to >= 0.16.2, <…

… 1.4.0

Updates the requirements on [googleauth](https://github.com/googleapis/google-auth-library-ruby) to permit the latest version.
- [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/v0.17.0...googleauth/v1.3.0)

---
updated-dependencies:
- dependency-name: googleauth
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

vmpooler-provider-gce.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.files         = Dir[ "lib/**/*" ]
   s.require_paths = ["lib"]
   s.add_dependency "google-apis-compute_v1", "~> 0.14"
-  s.add_dependency "googleauth", ">= 0.16.2", "< 1.3.0"
+  s.add_dependency "googleauth", ">= 0.16.2", "< 1.4.0"
   s.add_dependency "google-cloud-dns", "~> 0.35.1"
 
   s.add_development_dependency 'vmpooler', '>= 1.3.0', '~> 2.3'