build(deps): bump stylecop.analyzers in /src

Bumps [stylecop.analyzers](https://github.com/DotNetAnalyzers/StyleCopAnalyzers) from 1.2.0-beta.354 to 1.2.0-beta.406.
- [Release notes](https://github.com/DotNetAnalyzers/StyleCopAnalyzers/releases)
- [Commits](DotNetAnalyzers/StyleCopAnalyzers@1.2.0-beta.354...1.2.0-beta.406)

---
updated-dependencies:
- dependency-name: stylecop.analyzers
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/Directory.build.props

@@ -39,7 +39,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="stylecop.analyzers" Version="1.2.0-beta.354" PrivateAssets="all" />
+    <PackageReference Include="stylecop.analyzers" Version="1.2.0-beta.406" PrivateAssets="all" />
     <PackageReference Include="Roslynator.Analyzers" Version="4.1.0" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>