C#: Update the extractor to target .NET 9.

Author: michaelnebel

MODULE.bazel

@@ -25,7 +25,7 @@ bazel_dep(name = "nlohmann_json", version = "3.11.3", repo_name = "json")
 bazel_dep(name = "fmt", version = "10.0.0")
 bazel_dep(name = "rules_kotlin", version = "2.0.0-codeql.1")
 bazel_dep(name = "gazelle", version = "0.38.0")
-bazel_dep(name = "rules_dotnet", version = "0.16.1")
+bazel_dep(name = "rules_dotnet", version = "0.17.4")
 bazel_dep(name = "googletest", version = "1.14.0.bcr.1")
 bazel_dep(name = "rules_rust", version = "0.52.2")
 
@@ -71,7 +71,7 @@ tree_sitter_extractors_deps = use_extension("//misc/bazel/3rdparty:tree_sitter_e
 use_repo(tree_sitter_extractors_deps, "vendor__anyhow-1.0.93", "vendor__argfile-0.2.1", "vendor__chrono-0.4.38", "vendor__clap-4.5.20", "vendor__encoding-0.2.33", "vendor__figment-0.10.19", "vendor__flate2-1.0.34", "vendor__glob-0.3.1", "vendor__globset-0.4.15", "vendor__itertools-0.10.5", "vendor__itertools-0.13.0", "vendor__lazy_static-1.5.0", "vendor__log-0.4.22", "vendor__num-traits-0.2.19", "vendor__num_cpus-1.16.0", "vendor__proc-macro2-1.0.89", "vendor__quote-1.0.37", "vendor__ra_ap_base_db-0.0.232", "vendor__ra_ap_cfg-0.0.232", "vendor__ra_ap_hir-0.0.232", "vendor__ra_ap_hir_def-0.0.232", "vendor__ra_ap_hir_expand-0.0.232", "vendor__ra_ap_ide_db-0.0.232", "vendor__ra_ap_intern-0.0.232", "vendor__ra_ap_load-cargo-0.0.232", "vendor__ra_ap_parser-0.0.232", "vendor__ra_ap_paths-0.0.232", "vendor__ra_ap_project_model-0.0.232", "vendor__ra_ap_span-0.0.232", "vendor__ra_ap_syntax-0.0.232", "vendor__ra_ap_vfs-0.0.232", "vendor__rand-0.8.5", "vendor__rayon-1.10.0", "vendor__regex-1.11.1", "vendor__serde-1.0.214", "vendor__serde_json-1.0.132", "vendor__serde_with-3.11.0", "vendor__stderrlog-0.6.0", "vendor__syn-2.0.87", "vendor__tracing-0.1.40", "vendor__tracing-subscriber-0.3.18", "vendor__tree-sitter-0.24.4", "vendor__tree-sitter-embedded-template-0.23.2", "vendor__tree-sitter-json-0.24.8", "vendor__tree-sitter-ql-0.23.1", "vendor__tree-sitter-ruby-0.23.1", "vendor__triomphe-0.1.14", "vendor__ungrammar-1.16.1")
 
 dotnet = use_extension("@rules_dotnet//dotnet:extensions.bzl", "dotnet")
-dotnet.toolchain(dotnet_version = "8.0.101")
+dotnet.toolchain(dotnet_version = "9.0.100")
 use_repo(dotnet, "dotnet_toolchains")
 
 register_toolchains("@dotnet_toolchains//:all")

csharp/.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "paket": {
-      "version": "8.0.3",
+      "version": "9.0.1",
       "commands": [
         "paket"
       ]

csharp/.paket/Paket.Restore.targets

@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>

csharp/Directory.Build.props

@@ -131,7 +131,7 @@ public IList<string> GetNugetFeedsFromFolder(string folderPath)
         }
 
         // The version number should be kept in sync with the version .NET version used for building the application.
-        public const string LatestDotNetSdkVersion = "8.0.101";
+        public const string LatestDotNetSdkVersion = "9.0.100";
 
         /// <summary>
         /// Returns a script for downloading relevant versions of the

csharp/extractor/Semmle.Extraction.CSharp.DependencyFetching/DotNet.cs

@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <AssemblyName>Semmle.Extraction.CSharp.DependencyStubGenerator</AssemblyName>
     <RootNamespace>Semmle.Extraction.CSharp.DependencyStubGenerator</RootNamespace>
     <ImplicitUsings>enable</ImplicitUsings>

csharp/extractor/Semmle.Extraction.CSharp.DependencyStubGenerator/Semmle.Extraction.CSharp.DependencyStubGenerator.csproj

@@ -71,7 +71,7 @@ public int RunTests()
             testrunner.OnTestSkipped = OnTestSkipped;
 
             Console.WriteLine("Discovering tests...");
-            testrunner.Start(parallelAlgorithm: null);
+            testrunner.Start();
 
             Finished.WaitOne();
             Finished.Dispose();

csharp/extractor/Testrunner/Testrunner.cs

@@ -1,4 +1,4 @@
-framework: net8.0
+framework: net9.0
 storage: none
 source https://api.nuget.org/v3/index.json
 # behave like nuget in choosing transitive dependency versions