Bump Roslynator.Analyzers from 4.3.0 to 4.12.9 (#13)

Bumps [Roslynator.Analyzers](https://github.com/dotnet/roslynator) from 4.3.0 to 4.12.9.
- [Release notes](https://github.com/dotnet/roslynator/releases)
- [Changelog](https://github.com/dotnet/roslynator/blob/main/ChangeLog.md)
- [Commits](dotnet/roslynator@v4.3.0...v4.12.9)

---
updated-dependencies:
- dependency-name: Roslynator.Analyzers
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Directory.Build.props

@@ -32,7 +32,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Roslynator.Analyzers" Version="4.3.0">
+    <PackageReference Include="Roslynator.Analyzers" Version="4.12.9">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>