Merge pull request #5575 from tui-cs/dependabot/nuget/Microsoft.Net.Compilers.Toolset-5.6.0

Bump Microsoft.Net.Compilers.Toolset from 5.3.0 to 5.6.0

Author: tig

Directory.Packages.props

@@ -8,7 +8,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.VisualBasic.Workspaces" Version="4.14.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.14.0" />
-    <PackageVersion Include="Microsoft.Net.Compilers.Toolset" Version="5.3.0" />
+    <PackageVersion Include="Microsoft.Net.Compilers.Toolset" Version="5.6.0" />
     <PackageVersion Include="Microsoft.DotNet.PlatformAbstractions" Version="3.1.6" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="10.0.203" />
     <PackageVersion Include="Microsoft.CodeAnalysis" Version="4.14.0" />