Security
   * The documentation of mbedtls_ssl_session_save(),
     mbedtls_ssl_session_load(), mbedtls_ssl_context_save(), and
     mbedtls_ssl_context_load() has been updated to clarify the responsibility
     of the application to preserve the confidentiality and integrity of
     serialized data, mitigating the risk of misuse of these APIs.
     Credit to Haruto Kimura (Stella) for highlighting risks associated with
     tampered serialized data.
