Bump google-github-actions/auth from 1.2.0 to 2.0.0

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 1.2.0 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@f105ef0...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/build-plus.yml

@@ -56,7 +56,7 @@ jobs:
 
       - name: Authenticate to Google Cloud
         id: auth
-        uses: google-github-actions/auth@f105ef0cdb3b102a020be1767fcc8a974898b7c6 # v1.2.0
+        uses: google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591 # v2.0.0
         with:
           token_format: access_token
           workload_identity_provider: ${{ secrets.GCR_WORKLOAD_IDENTITY }}