Update Roles required for change vuln status
What does this MR do and why?
Updates https://docs.gitlab.com/ee/user/application_security/vulnerabilities/#change-the-status-of-a-vulnerability; Developers can no longer change a vuln status.
Updates https://docs.gitlab.com/ee/user/application_security/vulnerabilities/#change-the-status-of-a-vulnerability; Developers can no longer change a vuln status.