Bump Microsoft.CodeAnalysis.CSharp.CodeStyle in /src in the roslyn group

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


Updates `Microsoft.CodeAnalysis.CSharp.CodeStyle` from 4.11.0 to 4.12.0
- [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.CodeStyle
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: roslyn
...

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

src/Directory.Packages.props

@@ -7,10 +7,10 @@
     <PackageVersion Include="Microsoft.VisualStudioEng.MicroBuild.Core" Version="1.0.0" />
     <!-- Roslyn (version is overridden in Tests) -->
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.7.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.11.0" />
     <!-- Analyzers -->
     <PackageVersion Include="Microsoft.VisualStudio.Threading.Analyzers" Version="17.12.19" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="4.11.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="4.12.0" />
     <!-- MPack -->
     <PackageVersion Include="MonoDevelop.Addins" Version="0.4.7" />
     <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies.net472" Version="1.0.0" />