Bump Microsoft.NET.Test.Sdk from 18.8.1 to 18.9.0 - #305

Non-nullable property 'ReferencesDirectoryName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Name' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Name' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Namespace' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Possible null reference argument for parameter 'args' in 'void ILogger.Information(string messageTemplate, params object[] args)'.

Possible null reference argument for parameter 'args' in 'void ILogger.Information(string messageTemplate, params object[] args)'.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

The target framework 'net6.0' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.