Update dependency SimpleBase to 5.6.0

Author: renovate[bot]

Emulsion.ContentProxy/Emulsion.ContentProxy.fsproj

@@ -27,7 +27,7 @@ SPDX-License-Identifier: MIT
     <PackageReference Include="JetBrains.Lifetimes" Version="2025.3.1" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.10" />
     <PackageReference Include="Serilog" Version="4.3.0" />
-    <PackageReference Include="SimpleBase" Version="5.5.0" />
+    <PackageReference Include="SimpleBase" Version="5.6.0" />
   </ItemGroup>
 
 </Project>