Update TestServer to .NET 8.0

Author: moozzyk

Examples/TestServer/TestServer.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
@@ -14,7 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.MessagePack" Version="7.0.*" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.MessagePack" Version="8.0.*" />
   </ItemGroup>
 
   <Target Name="CopyClient" BeforeTargets="AfterBuild">

Examples/TestServer/package-lock.json

@@ -10,7 +10,7 @@
   "license": "ISC",
   "devDependencies": {},
   "dependencies": {
-    "@microsoft/signalr": "^7.0.0",
-    "@microsoft/signalr-protocol-msgpack": "^7.0.0"
+    "@microsoft/signalr": "^8.0.0",
+    "@microsoft/signalr-protocol-msgpack": "^8.0.0"
   }
 }