message: Fix protocol version in test
diff: @@ -159,7 +159,7 @@ mod high_cases {
  "type":"105",
  "dest":"Th7MpTaRZVRYnPiabds81Y"
  },
  - "protocolVersion":1,
  + "protocolVersion":2,
  "signature":"4o86XfkiJ4e2r3J6Ufoi17UU3W5Zi9sshV6FjBjkVw4sgEQFQov9dxqDEtLbAJAWffCWd5KfAk164QVo7mYwKkiV"}"#;
  let resp = LedgerUtils::submit_request(pool_handle, request);
  