Properly package net11.0 (#330)

Author: viceroypenguin

src/Immediate.Handlers/Immediate.Handlers.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-	<TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+	<TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
 	<IsPackable>true</IsPackable>
 	<IncludeBuildOutput>false</IncludeBuildOutput>
   </PropertyGroup>