Bug: Deployment method needs to be updated

[vevetron]

Describe the bug

  with:
    service_account_key: ***
  
    export_default_credentials: true
    version: latest
    cleanup_credentials: true
  env:
    pythonLocation: /opt/hostedtoolcache/Python/3.9.[2](https://github.com/cal-itp/reports/actions/runs/12361820259/job/34499780415#step:7:2)0/x64
Error: The v0 series of google-github-actions/setup-gcloud is no longer maintained. It will not receive updates, improvements, or security patches. Please upgrade to the latest supported versions: 

    https://github.com/google-github-actions/setup-gcloud
/usr/bin/tar xz --warning=no-unknown-keyword --overwrite -C /home/runner/work/_temp/b68d[3](https://github.com/cal-itp/reports/actions/runs/12361820259/job/34499780415#step:7:3)9a2-9e62-44fd-8ce5-6de7f57bdfc5 -f /home/runner/work/_temp/e[4](https://github.com/cal-itp/reports/actions/runs/12361820259/job/34499780415#step:7:4)761e71-4ede-4f17-a6[5](https://github.com/cal-itp/reports/actions/runs/12361820259/job/34499780415#step:7:5)1-43f91cb03a13
Warning: "service_account_key" has been deprecated. Please switch to using google-github-actions/auth which supports both Workload Identity Federation and Service Account Key JSON authentication. For more details, see https://github.com/google-github-actions/setup-gcloud#authorization

https://github.com/cal-itp/reports/actions/runs/12361820259/job/34499780415#step:7:1

To Reproduce
Steps to reproduce the behavior:

1. Make updated to the reports repo
2. https://github.com/cal-itp/reports/actions/workflows/main.yml
3. Click on "Build and Deploy to Netlify
4. See error in annotations

Expected behavior
Github loves us without reservations

[vevetron]

Oops already documented in #306