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

@@ -6,7 +6,7 @@
     <GlobalPackageReference Include="Rocket.Surgery.MSBuild.JetBrains.Annotations" Version="0.1.0" Condition="'$(MSBuildProjectName)'!='.build'" />
     <GlobalPackageReference Include="Rocket.Surgery.MSBuild.Metadata" Version="0.1.0" />
     <GlobalPackageReference Include="Rocket.Surgery.MSBuild.SourceLink" Version="0.1.0" />
-    <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" />