DeployTask should be a string, not an enum

[mryanmurphy]

Per docs and actual usage, there is no way to enumerate all possible values of task. It's an arbitrary string that only has meaning given to it via the consuming deployment mechanism. The example values are truly examples, not the only accepted values.

The task parameter is used by the deployment system to allow different execution paths. In the web world this might be deploy:migrations to run schema changes on the system. In the compiled world this could be a flag to compile an application with debugging enabled.

https://docs.github.com/en/rest/reference/deployments#create-a-deployment

octokit.net/Octokit/Models/Request/NewDeployment.cs

Line 41 in b4d7fb0

public DeployTask Task { get; set; }