Bump System.Security.Principal.Windows from 4.5.1 to 4.6.0 (#1060)

Bumps [System.Security.Principal.Windows](https://github.com/dotnet/corefx) from 4.5.1 to 4.6.0.
- [Release notes](https://github.com/dotnet/corefx/releases)
- [Commits](https://github.com/dotnet/corefx/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

src/PowerShellEditorServices/PowerShellEditorServices.csproj

@@ -27,7 +27,7 @@
     <PackageReference Include="Serilog.Sinks.File" Version="4.0.0" />
     <PackageReference Include="System.IO.Pipes.AccessControl" Version="4.5.1" />
     <PackageReference Include="System.Security.Principal" Version="4.3.0" />
-    <PackageReference Include="System.Security.Principal.Windows" Version="4.5.1" />
+    <PackageReference Include="System.Security.Principal.Windows" Version="4.6.0" />
     <PackageReference Include="UnixConsoleEcho" Version="0.1.0" />
     <PackageReference Include="OmniSharp.Extensions.DebugAdapter.Server" Version="0.14.0-*" />
   </ItemGroup>