build(deps): Bump google-github-actions/auth in the all group

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


Updates `google-github-actions/auth` from 2.1.4 to 2.1.5
- [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@f112390...62cf5bd)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -52,7 +52,7 @@ jobs:
       - uses: ko-build/setup-ko@3aebd0597dc1e9d1a26bcfdb7cbeb19c131d3037 # v0.7
 
       - name: Set up Cloud SDK
-        uses: google-github-actions/auth@f112390a2df9932162083945e46d439060d66ec2 # v2.1.4
+        uses: google-github-actions/auth@62cf5bd3e4211a0a0b51f2c6d6a37129d828611d # v2.1.5
         with:
           workload_identity_provider: 'projects/498091336538/locations/global/workloadIdentityPools/githubactions/providers/sigstore-rekor'
           service_account: 'github-actions-rekor@projectsigstore.iam.gserviceaccount.com'