Fix quarantined CreateGoogleCloudProvisioningStepsService test

What does this MR do and why?

This MR fixes the test quarantined as part of #446109. There seems to be a value returned by Devise.friendly_token(8) that makes the spec fail, but I wasn't able to find out which token value would cause the regex to not match, with the following script:

[21] pry(main)> (0..10_000_000).to_a.any? { deployment_name = "grit-#{Devise.friendly_token(8)}"[0..20 - 1].downcase.tr('_', '-').gsub(/-+$/, ''); puts deployment_name unless deployment_name.match?(Ci::Runners::CreateGoogleCloudProvisioningStepsService::DEPLOYMENT_NAME_REGEXP) }
=> false

I feel it is better to have it non-quarantined and still testing most of the logic, than to have it completely ignored.

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