Update dependency xunit.runner.visualstudio to 3.1.4 (#200)

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

Author: renovate[bot]

src/Cake.Markdownlint.Tests/Cake.Markdownlint.Tests.csproj

@@ -21,7 +21,7 @@
     <PackageReference Include="Shouldly" Version="4.3.0" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
   </ItemGroup>
 
   <ItemGroup>