Cannot set deployment state to in_progress

[sergeysova]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:
1.

    client.repos.createDeploymentStatus({
      ...context.repo,
      deployment_id: deploymentId,
      state: "in_progress",
    });

2. HttpError: Validation Failed
3. Because: https://developer.github.com/v3/repos/deployments/#parameters-2

To use the inactive state, you must provide the application/vnd.github.ant-man-preview+json custom media type. To use the in_progress and queued states, you must provide the application/vnd.github.flash-preview+json custom media type.

Expected behavior
createDeploymentStatus automatically sets media type if state is requires it.

Ref: https://github.com/authmenow/releases/runs/630056476?check_suite_focus=true (Deployment success), chrnorm/deployment-status#8

[thboop]

This should be fixed in @actions/github 5.0.0 please let me know if you are still seeing issue and we can reopen the issue