Add AdminSDHolder to critical infrastructure list

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AdminSDHolder permissions are applied every 60 minutes to numerous protected groups in the domain. If the AdminSDHolder permissions are misconfigured, they will continually apply the same vulnerabilities to Domain Admins and other groups.

https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/security-best-practices/appendix-c--protected-accounts-and-groups-in-active-directory#adminsdholder