Sets the Attached Policies list for the specified Project Member, overwriting any pre-existing Attached Policies. The request body will replace any pre-existing Policy attachment(s), and replace that list with those Policies identified in the request body.

Access Control:

• The calling principal must have both "manageMembers" and "managePolicies" action permissions for the resource "{project}" in the "authorization" service.
• In the Project workflow, the above permission is granted to all Project Admins and Resource Managers.
• The calling principal MUST NOT include a project scope.