security/softether: Update to 4.42.9798

Changes: https://www.softether.org/5-download/history
Security: https://www.softether.org/9-about/News/904-SEVPN202301
Security: CVE-2023-27395
Security: CVE-2023-22325
Security: CVE-2023-32275
Security: CVE-2023-27516
Security: CVE-2023-32634
Security: CVE-2023-31192