message: Upadte Attestation changelog.md
diff: - Changed `AttestationClient::AttestTpm` to match `AttestOpenEnclave` and `AttestSgxEnclave`
  - Added `std::vector<uint8_t>` dataToAttest parameter.
  - - Removed `PayLoad` in `TpmAttestationOptions`
  +- Removed `Payload` in `TpmAttestationOptions`
  - Changed `TpmResult` in `TpmAttestationResult` to type `std::vector<uint8_t>`
  ### Bugs Fixed
  