Update EffinitiveFramework.Core package to version 1.2.0 (#10616)

Co-authored-by: HenryBartosch <henry@haefelesoftware.com>

Author: HBartosch

frameworks/CSharp/effinitive/Benchmarks/Benchmarks.csproj

@@ -17,7 +17,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="EffinitiveFramework.Core" Version="1.1.0" />
+    <PackageReference Include="EffinitiveFramework.Core" Version="1.2.0" />
   </ItemGroup>
 
 </Project>