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

[abmusse]

CI: https://ci.nodejs.org/job/node-test-commit-ibmi/1332/nodes=ibmi73-ppc64/testReport/(root)/benchmark/test_benchmark_os/

test-benchmark-os.js now includes an os.uptime benchmark.

For reference, this commit adds the uptime benchmark: 0f0dd1a

This test fails is due to the fact that os.uptime returns enosys on IBM i.

https://github.com/libuv/libuv/blame/dc1bb0088e8fbb92c81beb55341dcb7b4079717f/src/unix/ibmi.c#L283

Welcome to Node.js v20.5.1.
Type ".help" for more information.
> 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']
}

We would need to find a way to skip this uptime benchmark individually (on IBM i) if possible. Otherwise we may need to disable running the test-benchmark-os.js in the meantime (on IBM i).

[mhdawson]

Closing as it passed in the nightly last night.