Update dependency Roslynator.Analyzers to 4.12.9

Author: renovate[bot]

Directory.Build.props

@@ -69,7 +69,7 @@
     <!--<Compile Update="**\*.cs" DependentUpon="I%(Filename).cs" />-->
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.143" PrivateAssets="all" />
     <PackageReference Include="stylecop.analyzers" Version="1.2.0-beta.556" PrivateAssets="all" />
-    <PackageReference Include="Roslynator.Analyzers" Version="4.12.8" PrivateAssets="All" />
+    <PackageReference Include="Roslynator.Analyzers" Version="4.12.9" PrivateAssets="All" />
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)stylecop.json" Link="stylecop.json" />
   </ItemGroup>
 </Project>