Use the regular dotnet test command invocation

.gitignore

@@ -201,3 +201,4 @@ FakesAssemblies/
 project.lock.json
 
 artifacts/
+/test/TestApp-*

Build.ps1

@@ -30,9 +30,6 @@ if($LASTEXITCODE -ne 0) { throw 'pack failed' }
 
 Write-Output "build: Testing"
 
-# Dotnet test doesn't run separate TargetFrameworks in parallel: https://github.com/dotnet/sdk/issues/19147
-# Workaround: use `dotnet test` on dlls directly in order to pass the `--parallel` option to vstest.
-# The _reported_ runtime is wrong but the _actual_ used runtime is correct, see https://github.com/microsoft/vstest/issues/2037#issuecomment-720549173
-& dotnet test test\Serilog.Settings.Configuration.Tests\bin\Release\*\Serilog.Settings.Configuration.Tests.dll --parallel
+& dotnet test test\Serilog.Settings.Configuration.Tests\Serilog.Settings.Configuration.Tests.csproj
 
-if($LASTEXITCODE -ne 0) { throw 'unit tests failed' }
+if($LASTEXITCODE -ne 0) { throw 'unit tests failed' }