github-actions: bump google-github-actions/auth from 2.0.0 to 2.1.0

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 2.0.0 to 2.1.0.
- [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@67e9c72...5a50e58)

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

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

.github/workflows/docker.yaml

@@ -117,7 +117,7 @@ jobs:
 
       - name: Google Auth
         id: auth
-        uses: google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591 #v2.0.0
+        uses: google-github-actions/auth@5a50e581162a13f4baa8916d01180d2acbc04363 #v2.1.0
         with:
           token_format: 'access_token'
           credentials_json: '${{ secrets.GCP_CREDENTIALS }}'
@@ -158,7 +158,7 @@ jobs:
 
       - name: Google Auth
         id: auth
-        uses: google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591 #v2.0.0
+        uses: google-github-actions/auth@5a50e581162a13f4baa8916d01180d2acbc04363 #v2.1.0
         with:
           token_format: 'access_token'
           credentials_json: '${{ secrets.GCP_CREDENTIALS }}'