fix: update script encoding to UTF-8 for Windows 11 compatibility

MAS/Separate-Files-Version/Extract_OEM_Folder.cmd

@@ -804,7 +804,7 @@ exit /b
 
 :export
 
-%psc% "$f=[System.IO.File]::ReadAllText('!_batp!') -split \":%~1\:.*`r`n\"; [io.file]::WriteAllText('!_pdesk!\$OEM$\$$\Setup\Scripts\SetupComplete.cmd',$f[1].Trim(),[System.Text.Encoding]::ASCII);"
+%psc% "$f=[System.IO.File]::ReadAllText('!_batp!') -split \":%~1\:.*`r`n\"; [io.file]::WriteAllText('!_pdesk!\$OEM$\$$\Setup\Scripts\SetupComplete.cmd',$f[1].Trim(),[System.Text.Encoding]::UTF8);"
 exit /b
 
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