test: benchmark/test-benchmark-os fails on IBM i #50207

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> require('os').uptime()
Uncaught:
SystemError [ERR_SYSTEM_ERROR]: A system error occurred: uv_uptime returned ENOSYS (function not implemented)
    at __node_internal_captureLargerStackTrace (node:internal/errors:496:5)
    at new SystemError (node:internal/errors:256:5)
    at new NodeError (node:internal/errors:367:7)
    at Object.__node_internal_checkError [as uptime] (node:os:68:13) {
  code: 'ERR_SYSTEM_ERROR',
  info: {
    errno: -109,
    code: 'ENOSYS',
    message: 'function not implemented',
    syscall: 'uv_uptime'
  },
  errno: [Getter/Setter: -109],
  syscall: [Getter/Setter: 'uv_uptime']
}