chore(deps): bump google-github-actions/auth in the actions group (#5966)

Bumps the actions group with 1 update: [google-github-actions/auth](https://github.com/google-github-actions/auth).

Updates `google-github-actions/auth` from 2.1.11 to 2.1.12
- [Release notes](https://github.com/google-github-actions/auth/releases)
- [Changelog](https://github.com/google-github-actions/auth/blob/main/CHANGELOG.md)
- [Commits](https://github.com/google-github-actions/auth/compare/140bb5113ffb6b65a7e9b937a81fa96cf5064462...b7593ed2efd1c1617e1b0254da33b86225adb2a5)

---
updated-dependencies:
- dependency-name: google-github-actions/auth
  dependency-version: 2.1.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

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

.github/workflows/enos-run.yml

@@ -152,7 +152,7 @@ jobs:
       - name: Configure GCP credentials
         if: contains(matrix.filter, 'gcp')
         id: gcp_auth
-        uses: google-github-actions/auth@140bb5113ffb6b65a7e9b937a81fa96cf5064462 # v2.1.11
+        uses: google-github-actions/auth@b7593ed2efd1c1617e1b0254da33b86225adb2a5 # v2.1.12
         with:
           credentials_json: ${{ secrets.GCP_CREDENTIALS }}
           access_token_lifetime: '3600s'