Sets the IP CIDR allowlist for this Company.

Replaces the company's IP allowlist; an empty list removes all restrictions. The update is rejected with a 400 if more than 5% of the company's currently-active agents would be blocked by the new list, or if the new list would block the caller; use the validate endpoint to preview the impact before applying. IP allowlisting is not supported for companies connected via AWS PrivateLink; leave the allowlist empty for those companies. Requires the privilege COMPANY_SECURITY_WRITE