fix: conformance test

Signed-off-by: Shengwen Yu <yshengwen@vmware.com>

.github/workflows/conformance_test.yml

@@ -18,13 +18,12 @@ jobs:
       - ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
+      - id: 'auth'
+        name: 'Authenticate to Google Cloud'
+        uses: google-github-actions/auth@v0
         with:
-          version: '285.0.0'
-          project_id: ${{ secrets.GCP_PROJECT_ID }}
-          service_account_email: ${{ secrets.GCP_SA_EMAIL }}
-          service_account_key: ${{ secrets.GCP_SA_KEY }}
-          export_default_credentials: true
+          credentials_json: '${{ secrets.GCP_CREDENTIALS }}'
+      - uses: google-github-actions/setup-gcloud@v0
       - run: gcloud info
       - name: Set up Go 1.17
         uses: actions/setup-go@v1