Update roslyn to 5.9.0-1.26279.7 (#9367)

Author: JoeRobich

CHANGELOG.md

@@ -4,6 +4,13 @@
 - Debug from .csproj and .sln [#5876](https://github.com/dotnet/vscode-csharp/issues/5876)
 
 # 2.143.x
+* Update Roslyn to 5.9.0-1.26279.7 (PR: [#9367](https://github.com/dotnet/vscode-csharp/pull/9367))
+  * Log Razor messages to normal LSP log endpoint (PR: [#83935](https://github.com/dotnet/roslyn/pull/83935))
+  * Don't gate LSP server shutdown on JSON-RPC stream completion (PR: [#83930](https://github.com/dotnet/roslyn/pull/83930))
+  * Speculative fix for exception formatting collection expression (PR: [#83933](https://github.com/dotnet/roslyn/pull/83933))
+  * feat: enable move static members up in headless env (PR: [#83696](https://github.com/dotnet/roslyn/pull/83696))
+  * Fix Razor @{ completion regression in VS Code CSHTML files (PR: [#83919](https://github.com/dotnet/roslyn/pull/83919))
+  * Report percentage progress during LSP project loading (PR: [#83785](https://github.com/dotnet/roslyn/pull/83785))
 * .slnx support (PR: [#9286](https://github.com/dotnet/vscode-csharp/pull/9286))
 * Fix debugger crash with in-memory symbols (PR: [#9335](https://github.com/dotnet/vscode-csharp/pull/9335))
 * Bump dotnet-sdk from 10.0.202 to 10.0.300 in /msbuild (PR: [#9294](https://github.com/dotnet/vscode-csharp/pull/9294))

package.json

@@ -40,7 +40,7 @@
     "workspace"
   ],
   "defaults": {
-    "roslyn": "5.8.0-1.26276.4",
+    "roslyn": "5.9.0-1.26279.7",
     "omniSharp": "1.39.14",
     "razorOmnisharp": "7.0.0-preview.23363.1",
     "xamlTools": "18.7.11727.258"