Bump xunit.runner.visualstudio from 2.5.3 to 2.5.4 (#233)

Author: dependabot[bot]

Directory.Packages.props

@@ -12,7 +12,7 @@
 
     <!-- Test -->
     <PackageVersion Include="xunit" Version="2.6.2" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.3" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.4" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.InMemory" Version="$(EFCoreVersion)" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.Sqlite" Version="$(EFCoreVersion)" />