Synchronize staff members

curl --location --request POST '/api/organizations//staffmembers/sync' \
--header 'Content-Type: application/json' \
--data-raw '{
    "employees": [
        {
            "externalId": "ext_emp_003",
            "name": "Alice Brown",
            "email": "alice.brown@example.com",
            "phoneNumber": "+15551112233",
            "accessRoleName": "Employee"
        }
    ]
}'