Update nuget non-major dependencies to v8.0.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Microsoft.AspNetCore.Mvc.Testing (source)	8.0.5 -> 8.0.6
Microsoft.AspNetCore.OpenApi (source)	8.0.5 -> 8.0.6

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Release Notes

dotnet/aspnetcore (Microsoft.AspNetCore.Mvc.Testing)

### [`v8.0.6`](https://togithub.com/dotnet/aspnetcore/compare/v8.0.5...v8.0.6)

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Configuration

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