Update the Wix version 4.0.6

Author: hjyamauchi

utils/build.ps1

@@ -183,7 +183,7 @@ $VSInstallRoot = & $vswhere -nologo -latest -products "*" -all -prerelease -prop
 $msbuild = "$VSInstallRoot\MSBuild\Current\Bin\$BuildArchName\MSBuild.exe"
 
 # Hoist to global scope as this is used in two sites.
-$WiXVersion = "4.0.5"
+$WiXVersion = "4.0.6"
 
 # Avoid $env:ProgramFiles in case this script is running as x86
 $UnixToolsBinDir = "$env:SystemDrive\Program Files\Git\usr\bin"