virtualbox-with-extension-pack-np: Fix autoupdate for ext-pack version

Add VirtualBox extension pack to autoupdate URLs, to prevent mismatch
between base installer and extension pack versions. Scoop supports
autoupdate URL collections with: [ScoopInstaller/Scoop#3518](ScoopInstaller/Scoop#3518).

Related to #238.

bucket/virtualbox-with-extension-pack-np.json

@@ -25,7 +25,7 @@
     },
     "installer": {
         "script": [
-            "Start-Process -Wait -WindowStyle Hidden cmd \"/c call `\"$dir\\VBoxSetup.exe`\" --msiparams INSTALLDIR=`\"$dir`\" VBOX_START=0 REBOOT=ReallySuppress --silent && icacls `\"$dir`\" /grant Everyone:F /T && echo y | `\"$dir\\VBoxManage.exe`\" extpack install --replace `\"$dir\\Oracle_VM_VirtualBox_Extension_Pack-$version.vbox-extpack`\"\" -Verb RunAs",
+            "Start-Process -Wait -WindowStyle Hidden cmd \"/c call `\"$dir\\VBoxSetup.exe`\" --msiparams INSTALLDIR=`\"$dir`\" VBOX_START=0 REBOOT=ReallySuppress --silent && icacls `\"$dir`\" /grant Everyone:F /T && echo y | `\"$dir\\VBoxManage.exe`\" extpack install --replace `\"$dir\\Oracle_VM_VirtualBox_Extension_Pack-$version-$matchRevision.vbox-extpack`\"\" -Verb RunAs",
             "Remove-Item \"$dir\\VBoxSetup.exe\"",
             "Remove-Item \"$env:PUBLIC\\Desktop\\Oracle VM VirtualBox.lnk\"",
             "Remove-Item -Recurse \"$([Environment]::GetFolderPath('commonstartmenu'))\\Programs\\Oracle VM VirtualBox\""
@@ -68,7 +68,10 @@
     "autoupdate": {
         "architecture": {
             "64bit": {
-                "url": "https://download.virtualbox.org/virtualbox/$version/VirtualBox-$version-$matchRevision-Win.exe#/VBoxSetup.exe"
+                "url": [
+                    "https://download.virtualbox.org/virtualbox/$version/VirtualBox-$version-$matchRevision-Win.exe#/VBoxSetup.exe",
+                    "https://download.virtualbox.org/virtualbox/$version/Oracle_VM_VirtualBox_Extension_Pack-$version-$matchRevision.vbox-extpack"
+                ]
             }
         },
         "hash": {