Update Microsoft.Build.Tasks.Core to 15.8.166, 17.14.7; Microsoft.Build.Utilities.Core to 17.14.7#36

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dependabot/nuget/MSBuildGitHash.Tests/Microsoft.Build.Tasks.Core-17.14.7MarkPflug/MSBuildGitHash:dependabot/nuget/MSBuildGitHash.Tests/Microsoft.Build.Tasks.Core-17.14.7Copy head branch name to clipboard