Bump CommunityToolkit.HighPerformance from 8.4.0 to 8.4.2

---
updated-dependencies:
- dependency-name: CommunityToolkit.HighPerformance
  dependency-version: 8.4.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

LLama/LLamaSharp.csproj

@@ -48,7 +48,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="CommunityToolkit.HighPerformance" Version="8.4.0" />
+    <PackageReference Include="CommunityToolkit.HighPerformance" Version="8.4.2" />
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.5" />
     <PackageReference Include="Microsoft.Bcl.Memory" Version="10.0.5" />
     <PackageReference Include="Microsoft.Extensions.AI.Abstractions" Version="10.4.0" />