web-api(fix): share tokens provided as arguments in files upload to upload jobs

[zimeg]

Summary

This PR passes any token provided to the options of files.uploadV2 with upload jobs for multiple files to prevent an unexpected not_authed error.

This is the error that's thrown when using the example code below!

/Users/me/programming/tools/node-slack-sdk/packages/web-api/dist/errors.js:62
    const error = errorWithCode(new Error(`An API error occurred: ${result.error}`), ErrorCode.PlatformError);
                                ^

Error: An API error occurred: not_authed
    at platformErrorFromResult (/Users/me/programming/tools/node-slack-sdk/packages/web-api/dist/errors.js:62:33)
    at WebClient.<anonymous> (/Users/me/programming/tools/node-slack-sdk/packages/web-api/dist/WebClient.js:198:60)
    at Generator.next (<anonymous>)
    at fulfilled (/Users/me/programming/tools/node-slack-sdk/packages/web-api/dist/WebClient.js:28:58)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  code: 'slack_webapi_platform_error',
  data: {
    ok: false,
    error: 'not_authed',
    response_metadata: { acceptedScopes: [ 'files:write:user' ] }
  }
}

Reviewers

Experiment and experience all this has to offer with the following snippet:

(async () => {
    const result = await web.files.uploadV2({
        channel_id: "C0123456789",
        token: "xoxb-0123456789-ABCDEF-GHIJKLMNOP-QRSTUVWXYZ",
        file_uploads: [{
            content: "hello world",
            filename: "GREETINGS.txt",
        }]
    });
    console.log(result);
})();

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[seratch]

Thank you! Looks good to me

[zimeg]

@seratch thank you for the reviews!