Bump AnalyzersVersion from 2.9.3 to 2.9.4

Bumps `AnalyzersVersion` from 2.9.3 to 2.9.4.

Updates `Microsoft.CodeAnalysis.FxCopAnalyzers` from 2.9.3 to 2.9.4
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/master/PostReleaseActivities.md)
- [Commits](dotnet/roslyn-analyzers@v2.9.3...v2.9.4)

Updates `Microsoft.CodeQuality.Analyzers` from 2.9.3 to 2.9.4
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/master/PostReleaseActivities.md)
- [Commits](dotnet/roslyn-analyzers@v2.9.3...v2.9.4)

Updates `Microsoft.NetCore.Analyzers` from 2.9.3 to 2.9.4
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/master/PostReleaseActivities.md)
- [Commits](dotnet/roslyn-analyzers@v2.9.3...v2.9.4)

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

Author: dependabot-preview[bot]

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <AnalyzersVersion>2.9.3</AnalyzersVersion>
+    <AnalyzersVersion>2.9.4</AnalyzersVersion>
   </PropertyGroup>
   <ItemGroup>
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)stylecop.json" Link="stylecop.json" />