build(deps): bump the gha group with 1 update

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


Updates `google-github-actions/auth` from 2.0.0 to 2.1.2
- [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@67e9c72...55bd3a7)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -109,7 +109,7 @@ jobs:
     steps:
       - id: "auth"
         name: "Authenticate to Google Cloud"
-        uses: "google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591" # ratchet:google-github-actions/[email protected]
+        uses: "google-github-actions/auth@55bd3a7c6e2ae7cf1877fd1ccb9d54c0503c457c" # ratchet:google-github-actions/[email protected]
         with:
           workload_identity_provider: ${{ secrets.NAIS_IO_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: "[email protected]"