THRIFT-5684 upgrade to net7.0:
Client: netstd
Patch: Jens Geyer
diff --git a/test/netstd/Server/Server.csproj b/test/netstd/Server/Server.csproj
index e6b42e2..85c1ad4 100644
--- a/test/netstd/Server/Server.csproj
+++ b/test/netstd/Server/Server.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <LangVersion>9.0</LangVersion>
     <AssemblyName>Server</AssemblyName>
     <PackageId>Server</PackageId>
@@ -37,9 +37,9 @@
   <ItemGroup>
     <PackageReference Include="System.IO.Pipes" Version="4.3.0" />
     <PackageReference Include="System.IO.Pipes.AccessControl" Version="5.0.0" />
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="6.0.0" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="7.0.0" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="[4.3,)" />
-    <PackageReference Include="System.ServiceModel.Primitives" Version="4.9.0" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="4.10.0" />
     <PackageReference Include="System.Threading" Version="[4.3,)" />
   </ItemGroup>