Update .csproj for function app sample v2

Author: justinyoo

samples/Aliencube.AzureFunctions.FunctionAppV2IoC/Aliencube.AzureFunctions.FunctionAppV2IoC.csproj

@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Aliencube.AzureFunctions.Extensions.OpenApi" Version="1.8.0" />
     <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.0.0" />
-    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.31" />
+    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.28" />
   </ItemGroup>
 
   <ItemGroup>