[Security] vpc/vpc-vpn-bastion = Update SoftEther to 4.42 (#693)

Author: michaelwittig

docs/vpc.md

@@ -185,7 +185,7 @@ During installation, the [pre shared key](https://en.wikipedia.org/wiki/Pre-shar
 
 ![Windows step 2](./img/vpc-vpn-bastion-windows2.png)
 
-1. Download and install [SoftEther VPN Server and VPN Bridge (Ver 4.41, Build 9787, rtm)](http://www.softether-download.com/files/softether/v4.41-9787-rtm-2023.03.14-tree/Windows/SoftEther_VPN_Server_and_VPN_Bridge/softether-vpnserver_vpnbridge-v4.41-9787-rtm-2023.03.14-windows-x86_x64-intel.exe)
+1. Download and install [SoftEther VPN Server and VPN Bridge (Ver 4.42, Build 9798, rtm)](http://www.softether-download.com/files/softether/v4.42-9798-rtm-2023.06.30-tree/Windows/SoftEther_VPN_Server_and_VPN_Bridge/softether-vpnserver_vpnbridge-v4.42-9798-rtm-2023.06.30-windows-x86_x64-intel.exe)
     1. Select the component `SoftEther VPN Server Manager (Admin Tools Only)`
 1. Add a new setting
 1. Set host name to

vpc/vpc-vpn-bastion.yaml

@@ -683,7 +683,7 @@ Resources:
               test: '[ ! -d /mnt/storage/backup.vpn_server.config ]'
         install:
           sources:
-            '/usr/local/src/softether': 'http://www.softether-download.com/files/softether/v4.41-9787-rtm-2023.03.14-tree/Linux/SoftEther_VPN_Server/64bit_-_Intel_x64_or_AMD64/softether-vpnserver-v4.41-9787-rtm-2023.03.14-linux-x64-64bit.tar.gz'
+            '/usr/local/src/softether': 'http://www.softether-download.com/files/softether/v4.42-9798-rtm-2023.06.30-tree/Linux/SoftEther_VPN_Server/64bit_-_Intel_x64_or_AMD64/softether-vpnserver-v4.42-9798-rtm-2023.06.30-linux-x64-64bit.tar.gz'
           files:
             '/etc/init.d/vpnserver':
               content: |