Bump google-github-actions/auth from 2 to 3

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 2 to 3.
- [Release notes](https://github.com/google-github-actions/auth/releases)
- [Changelog](https://github.com/google-github-actions/auth/blob/main/CHANGELOG.md)
- [Commits](google-github-actions/auth@v2...v3)

---
updated-dependencies:
- dependency-name: google-github-actions/auth
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/toolbox-publish.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@v2
+        uses: google-github-actions/auth@v3
         with:
           credentials_json: '${{ secrets.GCP_SA_KEY }}'