Update build scripts to point to new console runner

Author: bording

appveyor.yml

@@ -90,15 +90,15 @@ test_script:
       {
         .\packages\OpenCover\tools\OpenCover.Console.exe `
           -register:user `
-          "-target:""$Env:userprofile\.nuget\packages\xunit.runner.console\2.2.0\tools\$runner""" `
+          "-target:""$Env:userprofile\.nuget\packages\xunit.runner.console\2.3.1\tools\$runner""" `
           "-targetargs:""$Env:APPVEYOR_BUILD_FOLDER\bin\LibGit2Sharp.Tests\Release\net46\LibGit2Sharp.Tests.dll"" -noshadow" `
           "-filter:+[LibGit2Sharp]* -[LibGit2Sharp.Tests]*" `
           -hideskipped:All `
           -output:opencoverCoverage.xml
       }
       ElseIf ($Env:SHOULD_RUN_COVERITY_ANALYSIS -eq $False)
       {
-        & "$Env:userprofile\.nuget\packages\xunit.runner.console\2.2.0\tools\$runner" `
+        & "$Env:userprofile\.nuget\packages\xunit.runner.console\2.3.1\tools\$runner" `
             "$Env:APPVEYOR_BUILD_FOLDER\bin\LibGit2Sharp.Tests\Release\net46\LibGit2Sharp.Tests.dll" -noshadow
       }
     }

buildandtest.cmd

@@ -31,7 +31,7 @@ dotnet build "%~dp0\" /v:minimal /nologo /property:ExtraDefine="%EXTRADEFINE%"
 @IF ERRORLEVEL 1 EXIT /B %ERRORLEVEL%
 
 :: Run tests on Desktop and CoreCLR
-"%userprofile%\.nuget\packages\xunit.runner.console\2.2.0\tools\xunit.console.exe" "%~dp0bin\LibGit2Sharp.Tests\%Configuration%\net46\LibGit2Sharp.Tests.dll" -noshadow
+"%userprofile%\.nuget\packages\xunit.runner.console\2.3.1\tools\xunit.console.exe" "%~dp0bin\LibGit2Sharp.Tests\%Configuration%\net46\LibGit2Sharp.Tests.dll" -noshadow
 @IF ERRORLEVEL 1 EXIT /B %ERRORLEVEL%
 dotnet test "%~dp0LibGit2Sharp.Tests/LibGit2Sharp.Tests.csproj" -f netcoreapp2.0 --no-restore --no-build
 @IF ERRORLEVEL 1 EXIT /B %ERRORLEVEL%