fix: Get the project_id from gcloud

[JamshedVesuna]

I think the spirit of 9902503 was to prevent gcloud from popping out of the console and hanging. Unfortunately, this will always close the subprocess and return an empty string.

This causes downstream issues, for example when initializing a new BigQuery client [0] that relies on the credential to carry the project_id.

Adding --quiet will disable interactive prompts and either attempt to use defaults or error.

0. https://github.com/googleapis/google-cloud-ruby/blob/main/google-cloud-bigquery/lib/google/cloud/bigquery.rb

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[JamshedVesuna]

Hi, is it possible to get a review for this? I have signed the Contributor License Agreement. Thank you! @dazuma