Merge pull request #1286 from dotnet/renovate/xunit

chore(deps): update dependency xunit.runner.visualstudio to 3.1.5

Author: AArnott

Directory.Packages.props

@@ -43,7 +43,7 @@
   </ItemGroup>
   <ItemGroup Label="Library.Template">
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
     <PackageVersion Include="xunit" Version="2.9.3" />
   </ItemGroup>
   <ItemGroup>