api call to update issues health_status

Problem to solve

Currently, the API doesn't allow to update issues health status. We can do that only through the GUI.

Proposal

Editing the issue through the API should be able to work with a command like this:

❯ curl --request PUT --header "PRIVATE-TOKEN: $GLTOKEN"   --url "https://gitlab.com/api/v4/projects/55202941/issues/1?health_status=on_track"
{"error":"assignee_id, assignee_ids, confidential, created_at, description, discussion_locked, due_date, labels, add_labels, remove_labels, milestone_id, state_event, title, issue_type, weight, epic_id, epic_iid are missing, at least one parameter must be provided"}%

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