THRIFT-5832 Drop net6 support and add net9 instead
Client: netstd
Patch: Jens Geyer
diff --git a/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj b/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj
index c66558c..30e3208 100644
--- a/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj
+++ b/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <LangVersion>latestMajor</LangVersion>
     <Version>0.22.0.0</Version>
     <Nullable>enable</Nullable>
@@ -27,15 +27,15 @@
 
   <ItemGroup>
     <PackageReference Include="CompareNETObjects" Version="4.83.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.3.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.3.1" />
-    <PackageReference Include="NSubstitute" Version="5.1.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.6.3" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.6.3" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\..\Thrift\Thrift.csproj" />
-    <ProjectReference Include="..\Thrift.Compile.Tests\Thrift.Compile.net8\Thrift.Compile.net8.csproj" />
+    <ProjectReference Include="..\Thrift.Compile.Tests\Thrift.Compile.net9\Thrift.Compile.net9.csproj" />
   </ItemGroup>
 
   <ItemGroup>