Compiler Errors: Tests, 4.8

[lefig]

Describe the bug

I seem to have some compiler problems such as

Severity Code Description Project File Line Suppression State
Error CS8417 'NamedPipeClientStream': type used in an asynchronous using statement must be implicitly convertible to 'System.IAsyncDisposable' or implement a suitable 'DisposeAsync' method. Did you mean 'using' rather than 'await using'? H.Pipes.Tests (net4.8) C:\Work\Temp\H.Pipes-master\H.Pipes-master\src\tests\H.Pipes.Tests\Tests.cs 89 Active

Steps to reproduce the bug

Compile solution

Expected behavior

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Screenshots

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NuGet package version

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Platform

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IDE

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Additional context

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