fix lint issue

Author: nbayati

packages/google-auth/tests/test_agent_identity_utils.py

@@ -103,22 +103,22 @@ def test_get_agent_identity_certificate_path_prefix_false_positive(
         base_dir = str(tmpdir)
         well_known_dir = os.path.join(base_dir, "workload-spiffe-credentials")
         well_known_path = os.path.join(well_known_dir, "certificates.pem")
-        
+
         monkeypatch.setattr(
             "google.auth._agent_identity_utils._WELL_KNOWN_CERT_PATH",
             well_known_path,
         )
-        
+
         fake_dir = os.path.join(base_dir, "workload-spiffe-credentials-fake")
         fake_config_path = os.path.join(fake_dir, "config.json")
-        
+
         monkeypatch.setenv(
             environment_vars.GOOGLE_API_CERTIFICATE_CONFIG, fake_config_path
         )
         mock_get_cert.return_value = "cert_path"
 
         result = _agent_identity_utils.get_agent_identity_certificate_path()
-        
+
         assert result == "cert_path"
         mock_get_cert.assert_called_once_with(fake_config_path, False)