Bump Roslynator.Analyzers from 4.12.9 to 4.13.1

Bumps [Roslynator.Analyzers](https://github.com/dotnet/roslynator) from 4.12.9 to 4.13.1.
- [Release notes](https://github.com/dotnet/roslynator/releases)
- [Changelog](https://github.com/dotnet/roslynator/blob/main/ChangeLog.md)
- [Commits](dotnet/roslynator@v4.12.9...v4.13.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Directory.Build.props

@@ -9,7 +9,7 @@
         <Nullable>enable</Nullable>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Roslynator.Analyzers" Version="4.12.9">
+        <PackageReference Include="Roslynator.Analyzers" Version="4.13.1">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
         </PackageReference>