chore(deps): Bump Microsoft.CodeAnalysis.CSharp.CodeStyle in /src

Bumps [Microsoft.CodeAnalysis.CSharp.CodeStyle](https://github.com/dotnet/roslyn) from 3.11.0 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-major
...

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

src/Directory.Build.props

@@ -23,7 +23,7 @@
   <ItemGroup>
     <PackageReference Include="StyleCop.Analyzers.Unstable" Version="1.2.0.556" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.4" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="3.11.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="4.12.0" PrivateAssets="all" />
     <PackageReference Include="CSharpIsNullAnalyzer" Version="0.1.593" PrivateAssets="all" />
   </ItemGroup>