Update xunit path

Changed in https://github.com/xunit/xunit/commit/598c2ea642

Ix.NET/Source/build-new.ps1

@@ -4,7 +4,7 @@ $configuration = "Release"
 
 $isAppVeyor = Test-Path -Path env:\APPVEYOR
 $outputLocation = Join-Path $scriptPath "testResults"
-$xUnitConsolePath = ".\packages\xunit.runner.console\tools\xunit.console.exe"
+$xUnitConsolePath = ".\packages\xunit.runner.console\tools\net452\xunit.console.exe"
 $rootPath = (Resolve-Path .).Path
 $artifacts = Join-Path $rootPath "artifacts"
 
@@ -124,4 +124,4 @@ else
 {
   .\packages\ReportGenerator\tools\ReportGenerator.exe -reports:"$outputFile" -targetdir:"$outputPath"
   &"$outPutPath/index.htm"
-}
+}