build(deps): Bump Microsoft.CodeAnalysis.CSharp from 4.6.0 to 4.8.0

Bumps [Microsoft.CodeAnalysis.CSharp](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
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/bunit.generators/bunit.generators.csproj

@@ -15,7 +15,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="AngleSharp" Version="1.0.7" />
-		<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.6.0" />
+		<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
 		<PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

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

@@ -16,7 +16,7 @@
 		<PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
 		<PackageReference Include="Verify.SourceGenerators" Version="2.2.0" />
 		<PackageReference Include="Verify.Xunit" Version="22.5.0" />
-		<PackageReference Update="Microsoft.CodeAnalysis.CSharp" Version="4.6.0" />
+		<PackageReference Update="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
 		<PackageReference Update="Microsoft.CodeAnalysis.Common" Version="4.6.0" />
 		<PackageReference Update="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.6.0" />
 		<PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.6.0" />