Bump Microsoft.CodeAnalysis.FxCopAnalyzers from 2.9.7 to 2.9.8

Bumps [Microsoft.CodeAnalysis.FxCopAnalyzers](https://github.com/dotnet/roslyn-analyzers) from 2.9.7 to 2.9.8.
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/master/PostReleaseActivities.md)
- [Commits](https://github.com/dotnet/roslyn-analyzers/commits)

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

Packages.props

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
-    <GlobalPackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.7" />
+    <GlobalPackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" />
     <GlobalPackageReference Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="2.9.8" />
     <GlobalPackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0-preview.2" />
     <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta2-19554-01" />