Bump xunit.runner.visualstudio from 3.1.4 to 3.1.5 (#325)

Author: vcsjones

Directory.Packages.props

@@ -16,6 +16,6 @@
 
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageVersion Include="xunit.v3" Version="3.1.0" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
 </Project>