Bump Microsoft.CodeAnalysis.CSharp and CSharpier.Core (#2373)

Bumps [Microsoft.CodeAnalysis.CSharp](https://github.com/dotnet/roslyn) and [CSharpier.Core](https://github.com/belav/csharpier). These dependencies needed to be updated together.

Updates `Microsoft.CodeAnalysis.CSharp` from 4.11.0 to 4.11.0
- [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)

Updates `CSharpier.Core` from 0.28.2 to 0.30.2
- [Release notes](https://github.com/belav/csharpier/releases)
- [Changelog](https://github.com/belav/csharpier/blob/main/CHANGELOG.md)
- [Commits](belav/csharpier@0.28.2...0.30.2)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.CSharp
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: CSharpier.Core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

sources/SilkTouch/SilkTouch/Silk.NET.SilkTouch.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="ClangSharp.PInvokeGenerator" Version="18.1.0.2" />
-    <PackageReference Include="CSharpier.Core" Version="0.28.2" />
+    <PackageReference Include="CSharpier.Core" Version="0.30.2" />
     <PackageReference Include="Humanizer.Core" Version="2.14.1" />
     <PackageReference Include="Microsoft.Build.Locator" Version="1.7.8" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.11.0" />