Bump google-github-actions/auth from 1.1.1 to 1.2.0 (#4703)

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 1.1.1 to 1.2.0.
- [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...f105ef0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jakub Jarosz <99677300+jjngx@users.noreply.github.com>
Co-authored-by: Paul Abel <128620221+pdabelf5@users.noreply.github.com>

.github/workflows/build-plus.yml

@@ -56,7 +56,7 @@ jobs:
 
       - name: Authenticate to Google Cloud
         id: auth
-        uses: google-github-actions/auth@35b0e87d162680511bf346c299f71c9c5c379033 # v1.1.1
+        uses: google-github-actions/auth@f105ef0cdb3b102a020be1767fcc8a974898b7c6 # v1.2.0
         with:
           token_format: access_token
           workload_identity_provider: ${{ secrets.GCR_WORKLOAD_IDENTITY }}