Updated Azure Functions SDK (#4402)

Author: michaelstaib

templates/v12/function/HotChocolate.Template.AzureFunctions.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.13" />
+    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.0.1" />
     <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
     <PackageReference Include="HotChocolate.AzureFunctions" Version="11.1.0" />
   </ItemGroup>