Bump StyleCop.Analyzers from 1.2.0-beta.507 to 1.2.0-beta.556 (PowerShell#20953)

Author: dependabot[bot]

Analyzers.props

@@ -1,6 +1,6 @@
 <Project>
   <ItemGroup>
     <PackageReference Include="DotNetAnalyzers.DocumentationAnalyzers" Version="1.0.0-beta.59" PrivateAssets="all" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.507" PrivateAssets="all" />
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556" PrivateAssets="all" />
   </ItemGroup>
 </Project>