chore: bump google-github-actions/auth from 1.2.0 to 2.1.0

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 1.2.0 to 2.1.0.
- [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@f105ef0...5a50e58)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/cicd.yaml

@@ -169,7 +169,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@f105ef0cdb3b102a020be1767fcc8a974898b7c6
+        uses: google-github-actions/auth@5a50e581162a13f4baa8916d01180d2acbc04363
         with:
           workload_identity_provider: ${{ secrets[format('{0}_{1}', matrix.environment, 'GCP_WORKLOAD_IDENTITY_PROVIDER')] }}
           service_account: ${{ secrets[format('{0}_{1}', matrix.environment, 'GCP_WORKLOAD_IDENTITY_SERVICE_ACCOUNT')] }}