build(deps): bump google-github-actions/auth from 1.1.1 to 2.0.0

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 1.1.1 to 2.0.0.
- [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@35b0e87...67e9c72)

---
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/test-kms.yml

@@ -32,7 +32,7 @@ jobs:
           pip install --upgrade tox
 
       - name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@35b0e87d162680511bf346c299f71c9c5c379033
+        uses: google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591
         with:
           token_format: access_token
           workload_identity_provider: projects/843741030650/locations/global/workloadIdentityPools/securesystemslib-tests/providers/securesystemslib-tests