Fix flaky Windows 18.x and 22.x unit tests

[mwbrooks]

Packages:

Select all that apply:

• @slack/web-api
• @slack/rtm-api
• @slack/webhooks
• @slack/oauth
• @slack/socket-mode
• @slack/types
• I don't know

Reproducible in:

The Slack SDK version

• main

Node.js runtime version

• 18.x
• 22.x

OS info

• Windows

Steps to reproduce:

• See the failing tests on main dating back to Dec 2024
• Windows 18.x and 22.x appear to be flaky, failing on-and-off
• Example of Windows 18.x failures
• Example of Windows 22.x failures

Notes

This may be caused by a flaky test on Windows, which is passing on Ubuntu. Since it passes sometimes and fails others due to a timeout error, we may want to increase the timeout of the failing test since it may be dependent on the Windows VM that we're provisioned.

Requirements

For general questions/issues about Slack API platform or its server-side, could you submit questions at https://my.slack.com/help/requests/new instead. 🙇

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