build(deps): Bump Microsoft.CodeAnalysis.CSharp.Workspaces

Bumps [Microsoft.CodeAnalysis.CSharp.Workspaces](https://github.com/dotnet/roslyn) from 4.6.0 to 4.8.0.
- [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
...

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

Author: dependabot[bot]

tests/bunit.generators.tests/bunit.generators.tests.csproj

@@ -19,7 +19,7 @@
 		<PackageReference Update="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
 		<PackageReference Update="Microsoft.CodeAnalysis.Common" Version="4.8.0" />
 		<PackageReference Update="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.8.0" />
-		<PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.6.0" />
+		<PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
 		<PackageReference Update="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.XUnit" Version="1.1.1" />
 
 		<PackageReference Include="xunit" Version="2.6.2" />