Update Microsoft.Build.Tasks.Core package (#4083)

Author: dbreshears

Directory.Packages.props

@@ -37,7 +37,7 @@
     <PackageVersion Include="Microsoft.Azure.Kusto.Data" Version="13.0.2" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.6" />
     <PackageVersion Include="Microsoft.Bcl.HashCode" Version="6.0.0" />
-    <PackageVersion Include="Microsoft.Build.Tasks.Core" Version="17.14.8" />
+    <PackageVersion Include="Microsoft.Build.Tasks.Core" Version="17.14.28" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="$(RoslynVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Features" Version="$(RoslynVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="$(RoslynVersion)" />