chore(deps): Bump the all group with 1 update

Bumps the all group with 1 update: [Microsoft.CodeAnalysis.CSharp.Workspaces](https://github.com/dotnet/roslyn).

- [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)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.CSharp.Workspaces
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
...

Signed-off-by: dependabot[bot] <[email protected]>

src/tests/OpenAI.Generators.SnapshotTests/OpenAI.Generators.SnapshotTests.csproj

@@ -26,7 +26,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.MSTest" Version="1.1.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.7.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
     <PackageReference Include="Verify.MSTest" Version="22.5.0" />
     <PackageReference Include="Verify.SourceGenerators" Version="2.2.0" />
   </ItemGroup>