Bump xunit from 2.5.0 to 2.5.1 (#1334)

Author: dependabot[bot]

test/TestBuildingBlocks/TestBuildingBlocks.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="$(EFCoreVersion)" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(TestSdkVersion)" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="$(EFCorePostgresVersion)" />
-    <PackageReference Include="xunit" Version="2.5.0" />
+    <PackageReference Include="xunit" Version="2.5.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0" PrivateAssets="All" />
   </ItemGroup>
 </Project>