Merge pull request #213 from martincostello/dependabot/nuget/Microsoft.AspNetCore.Mvc.Testing-5.0.4

Author: dependabot[bot]

Directory.Packages.props

@@ -1,7 +1,7 @@
 <Project>
   <ItemGroup>
     <PackageVersion Include="coverlet.msbuild" Version="3.0.3" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="5.0.3" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="5.0.4" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="1.0.0" />
     <PackageVersion Include="Moq" Version="4.16.1" />