Bump the dotnet group in /tools with 3 updates

Bumps the dotnet group in /tools with 3 updates: [Microsoft.CodeAnalysis.CSharp.Workspaces](https://github.com/dotnet/roslyn), [System.Text.Json](https://github.com/dotnet/runtime) and [xunit](https://github.com/xunit/xunit).


Updates `Microsoft.CodeAnalysis.CSharp.Workspaces` from 4.8.0 to 4.9.2
- [Release notes](https://github.com/dotnet/roslyn/releases)
- [Changelog](https://github.com/dotnet/roslyn/blob/main/docs/Breaking%20API%20Changes.md)
- [Commits](https://github.com/dotnet/roslyn/commits)

Updates `System.Text.Json` from 8.0.1 to 8.0.3
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.1...v8.0.3)

Updates `xunit` from 2.6.6 to 2.7.0
- [Commits](xunit/xunit@2.6.6...2.7.0)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.CSharp.Workspaces
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: System.Text.Json
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: xunit
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <support@github.com>

tools/ExampleTester/ExampleTester.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Build.Locator" Version="1.7.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.9.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.8.0" />
     <PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
   </ItemGroup>

tools/MarkdownConverter.Tests/MarkdownConverter.Tests.csproj

@@ -15,7 +15,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="XMLUnit.Core" Version="2.9.2" />
-    <PackageReference Include="xunit" Version="2.6.6" />
+    <PackageReference Include="xunit" Version="2.7.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.7">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>

tools/Utilities/Utilities.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="8.0.1" />
+    <PackageReference Include="System.Text.Json" Version="8.0.3" />
   </ItemGroup>
 
 </Project>