Update Roslyn to 4.9.0-1.23502.8

Author: davidwengier

CHANGELOG.md

@@ -8,6 +8,10 @@
 - Debug from .csproj and .sln [#5876](https://github.com/dotnet/vscode-csharp/issues/5876)
 
 ## Latest
+* Update Roslyn version to 4.9.0-1.23502.8 (PR: [#6447](https://github.com/dotnet/vscode-csharp/pull/6447))
+  * Update Razor project configuration file name (PR: [#70156](https://github.com/dotnet/roslyn/pull/70156))
+
+## 2.5.?
 * Update Roslyn version to 4.9.0-1.23502.2 (PR: [#6463](https://github.com/dotnet/vscode-csharp/pull/6463))
   * Fix issue loading projects on .NET 8 RC2 (PR: [#70196](https://github.com/dotnet/roslyn/pull/70196))
   * Fix exception thrown by outdated version of ExternalAccess.RazorCompiler.dll (PR: [#70716](https://github.com/dotnet/roslyn/pull/70176))

package.json

@@ -37,7 +37,7 @@
     }
   },
   "defaults": {
-    "roslyn": "4.9.0-1.23502.2",
+    "roslyn": "4.9.0-1.23502.8",
     "omniSharp": "1.39.7",
     "razor": "7.0.0-preview.23475.5",
     "razorOmnisharp": "7.0.0-preview.23363.1"
@@ -5422,4 +5422,4 @@
       }
     ]
   }
-}
+}