Update dependency Amazon.CDK.Lib to 2.259.0

Author: dependencyupdates[bot]

src/AuroraSetup/AuroraSetup.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Amazon.CDK.Lib" Version="2.257.0" />
+    <PackageReference Include="Amazon.CDK.Lib" Version="2.259.0" />
     <PackageReference Include="Amazon.Jsii.Analyzers" Version="1.132.0" />
     <PackageReference Include="Constructs" Version="10.6.0" />
   </ItemGroup>