chore(deps): update dependency xunit.runner.visualstudio to v3 (#69)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/directory.packages.props

@@ -27,7 +27,7 @@
     <PackageVersion Include="Microsoft.Reactive.Testing" Version="6.0.2" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.analyzers" Version="1.19.0" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
   </ItemGroup>
 
   <Import