chore(deps): bump google-github-actions/auth from 2 to 3 (#240)

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
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -259,7 +259,7 @@ jobs:
           sdk: ${{ matrix.dart-version }}
 
       - name: Authenticate to Google Cloud/Firebase
-        uses: google-github-actions/auth@v2
+        uses: google-github-actions/auth@v3
         with:
           workload_identity_provider: '${{ secrets.WORKLOAD_IDENTITY_PROVIDER }}'
           service_account: '${{ secrets.SERVICE_ACCOUNT }}'