Bump MSTest from 3.8.3 to 4.0.0#176

dependabot[bot] wants to merge 1 commit intomainAzure/azure-api-management-policy-toolkit:mainfrom

dependabot/nuget/test/Test.Testing/MSTest-4.0.0Azure/azure-api-management-policy-toolkit:dependabot/nuget/test/Test.Testing/MSTest-4.0.0Copy head branch name to clipboard