build: updated gcp configuration for buildjet runner

.github/workflows/vere.yml

@@ -17,6 +17,8 @@ on:
     secrets:
       CACHIX_AUTH_TOKEN:
         required: false
+      GCP_CREDENTIALS:
+        required: false
       GCS_SERVICE_ACCOUNT_KEY:
         required: false
       GCS_PROJECT:
@@ -129,13 +131,14 @@ jobs:
           name: version-string
           path: version-string
 
-      - uses: google-github-actions/setup-gcloud@v0.2.0
+      - uses: google-github-actions/auth@v1
+        with:
+          credentials_json: ${{ secrets.GCP_CREDENTIALS }}
+
+      - uses: google-github-actions/setup-gcloud@v1
         if: inputs.upload
         with:
-          version: '290.0.1'
-          service_account_key: ${{ secrets.GCS_SERVICE_ACCOUNT_KEY }}
           project_id: ${{ secrets.GCS_PROJECT }}
-          export_default_credentials: true
 
       - name: upload binary to bootstrap.urbit.org
         if: inputs.upload