Update dependency System.Threading.RateLimiting to v9

Author: dependencyupdates[bot]

src/Directory.Packages.props

@@ -27,7 +27,7 @@
     <PackageVersion Include="Particular.Packaging" Version="4.2.2" />
     <PackageVersion Include="PublicApiGenerator" Version="11.4.6" />
     <PackageVersion Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
-    <PackageVersion Include="System.Threading.RateLimiting" Version="8.0.0" />
+    <PackageVersion Include="System.Threading.RateLimiting" Version="9.0.8" />
   </ItemGroup>
 
   <ItemGroup Label="Pinned transitive dependencies">