fix(e2e): pass VERCEL_AUTOMATION_BYPASS_SECRET to staging workflow

The keyless tests need this secret to bypass Vercel SSO protection
on the staging dashboard. It was already available as a GitHub secret
and used in ci.yml but missing from e2e-staging.yml.

Author: jacekradko

.github/workflows/e2e-staging.yml

@@ -222,6 +222,7 @@ jobs:
           E2E_PROJECT: ${{ matrix.test-project }}
           INTEGRATION_INSTANCE_KEYS: ${{ secrets.INTEGRATION_INSTANCE_KEYS }}
           INTEGRATION_STAGING_INSTANCE_KEYS: ${{ secrets.INTEGRATION_STAGING_INSTANCE_KEYS }}
+          VERCEL_AUTOMATION_BYPASS_SECRET: ${{ secrets.VERCEL_AUTOMATION_BYPASS_SECRET }}
           NODE_EXTRA_CA_CERTS: ${{ github.workspace }}/integration/certs/rootCA.pem
 
       - name: Upload test-results