Workflow dispatch API returns 200 instead of 204

[WKBae]

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https://docs.github.com/en/rest/actions/workflows?apiVersion=2022-11-28#create-a-workflow-dispatch-event
POST /repos/{owner}/{repo}/actions/workflows/{workflow_id}/dispatches is documented to return status code 204, and it did until few hours ago.
At some point, the API was changed to return 200 with JSON body containing workflow_run_id, run_url, html_url, which caused automated workflows expecting 204 to fail.

Possibly related: https://github.com/orgs/community/discussions/9752

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[matf]

Reading this to the hum of the world frantically rushing to update all GitHub dispatches API calls in their scripts...

[enescakir]

Also, their SDKs are expecting 204 No Content
octokit/octokit.rb#1789

[ataylorme]

The GitHub REST API is versioned specifically to avoid cases like this. Based on that doc I would expect a new API version for the status code and response body change

[jtomkiew-mng]

FYI, setting the old API version via headers does not help - still returns 200 with content.