Bump Microsoft.NET.Test.Sdk from 18.3.0 to 18.6.0#12

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masterTensionDev/ULID.Serialization.SystemTextJson:masterfrom

dependabot/nuget/TensionDev.ULID.Serialization.SystemTextJson.Tests/Microsoft.NET.Test.Sdk-18.6.0TensionDev/ULID.Serialization.SystemTextJson:dependabot/nuget/TensionDev.ULID.Serialization.SystemTextJson.Tests/Microsoft.NET.Test.Sdk-18.6.0Copy head branch name to clipboard