Bump google-github-actions/auth from 2.1.4 to 2.1.5 (#170)

Bumps [google-github-actions/auth](https://github.com/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
...

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

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
           cache: false
 
       # This is provisioned here: https://github.com/chainguard-dev/secrets/blob/main/terraform-provider-chainguard.tf
-      - uses: google-github-actions/auth@f112390a2df9932162083945e46d439060d66ec2 # v2.1.4
+      - uses: google-github-actions/auth@62cf5bd3e4211a0a0b51f2c6d6a37129d828611d # v2.1.5
         id: auth
         with:
           workload_identity_provider: "projects/12758742386/locations/global/workloadIdentityPools/github-pool/providers/github-provider"