Update changelog

Author: davidwengier

CHANGELOG.md

@@ -8,10 +8,11 @@
   * Upgrade language server to run on .NET 8 (PR: [#72247](https://github.com/dotnet/roslyn/pull/72247))
   * Refactors LSP server extension assembly loading (PR: [#71862](https://github.com/dotnet/roslyn/pull/71862))
   * Report better warnings and errors if build hosts exit abnormally (PR: [#71909](https://github.com/dotnet/roslyn/pull/71909))
-* Update Razor to 7.0.0-preview.24123.5 (PR: [#6922](https://github.com/dotnet/vscode-csharp/pull/6922))
+* Update Razor to 7.0.0-preview.24151.1 (PR: [#6922](https://github.com/dotnet/vscode-csharp/pull/6922))
   - Upgrade language server to run on .NET 8 (PR: [#9981](https://github.com/dotnet/razor/pull/9981))
   - Support inlay hints (PR: [#9904](https://github.com/dotnet/razor/pull/9904) and [#6857](https://github.com/dotnet/vscode-csharp/pull/6857))
   - Don't ship as self-contained (PR: [#9891](https://github.com/dotnet/razor/pull/9891))
+  - Better using directive completiong (PR: [#9982](https://github.com/dotnet/razor/pull/9982))
 
 ## 2.19.13
 * Fix `Attribute` snippet (PR: [#6879](https://github.com/dotnet/vscode-csharp/pull/6879))