Bump Microsoft.NET.Test.Sdk from 17.2.0 to 17.5.0 in /samples/snippets/core/testing/unit-testing-best-practices/csharp/before#1153

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dependabot/nuget/samples/snippets/core/testing/unit-testing-best-practices/csharp/before/Microsoft.NET.Test.Sdk-17.5.0Rob-S/docs:dependabot/nuget/samples/snippets/core/testing/unit-testing-best-practices/csharp/before/Microsoft.NET.Test.Sdk-17.5.0Copy head branch name to clipboard