Update StyleCop.Analyzers.

Author: bgrainger

src/Directory.Build.props

@@ -39,7 +39,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406">
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.435">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>