Upgrade Cake.Sdk to version 6.0.0

Author: devlead

build/Build.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Cake.Sdk/5.0.25198.49-beta">
+<Project Sdk="Cake.Sdk/6.0.0">
   <PropertyGroup>
     <TargetFramework Condition="$(TargetFrameworks) == ''">net9.0</TargetFramework>
     <RunWorkingDirectory>$(MSBuildProjectDirectory)/..</RunWorkingDirectory>
@@ -7,4 +7,4 @@
     <PackageReference Include="Spectre.Console" Version="0.50.0" />
     <Using Include="Spectre.Console"/>
   </ItemGroup>
-</Project>
+</Project>