Bump google-github-actions/auth from 1.1.1 to 2.1.2

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 1.1.1 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@35b0e87...55bd3a7)

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

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

Author: dependabot[bot]

.github/workflows/conformance-gke.yaml

@@ -56,7 +56,7 @@ jobs:
 
       - name: Set up gcloud credentials
         id: 'auth'
-        uses: 'google-github-actions/auth@35b0e87d162680511bf346c299f71c9c5c379033'
+        uses: 'google-github-actions/auth@55bd3a7c6e2ae7cf1877fd1ccb9d54c0503c457c'
         with:
           credentials_json: '${{ secrets.GCP_PR_SA_KEY }}'
 

.github/workflows/conformance-tetragon-gke.yaml

@@ -40,7 +40,7 @@ jobs:
 
       - name: Set up gcloud credentials
         id: 'auth'
-        uses: 'google-github-actions/auth@35b0e87d162680511bf346c299f71c9c5c379033'
+        uses: 'google-github-actions/auth@55bd3a7c6e2ae7cf1877fd1ccb9d54c0503c457c'
         with:
           credentials_json: '${{ secrets.GCP_PR_SA_KEY }}'