Bump Microsoft.CodeAnalysis.CSharp from 4.8.0 to 4.9.2

Bumps [Microsoft.CodeAnalysis.CSharp](https://github.com/dotnet/roslyn) from 4.8.0 to 4.9.2.
- [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
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/Directory.Build.props

@@ -12,7 +12,7 @@
     <IsPackable>true</IsPackable>
     <Description>LaDeak.JsonMergePatch libraries provide an implementation for Json Merge Patch, RFC7396. Library using C# source generators to generate the types required for serialization. The Http package provides extension methods for HTTP requests, while the AspNetCore package provides an InputReader implementation.</Description>
 
-    <MicrosoftCodeAnalysisCSharpVersion>4.8.0</MicrosoftCodeAnalysisCSharpVersion>
+    <MicrosoftCodeAnalysisCSharpVersion>4.9.2</MicrosoftCodeAnalysisCSharpVersion>
     <MicrosoftCodeAnalysisAnalyzersVersion>3.3.4</MicrosoftCodeAnalysisAnalyzersVersion>
   </PropertyGroup>
 

test/JsonMergePatch.SourceGenerator.Abstractions.Tests/JsonMergePatch.SourceGenerator.Tests.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.9.2" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="8.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="NSubstitute" Version="5.1.0" />