chore: Update dotnet monorepo to 5.6.0

Author: renovate[bot]

src/Directory.Packages.props

@@ -13,8 +13,8 @@
     <PackageVersion Include="Polyfill" Version="11.0.1" />
     <PackageVersion Include="PublicApiGenerator" Version="11.5.4" />
     <PackageVersion Include="Roslynator.Analyzers" PrivateAssets="All" Version="4.15.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.3.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.3.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.6.0" />
     <PackageVersion Include="System.Text.Json" Version="10.0.10" />
     <PackageVersion Include="Shouldly" Version="4.3.0" />
     <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.12" />