Update roslyn to 5.8.0-1.26267.2 (#9321)

Author: davidwengier

.github/skills/update-roslyn-version/SKILL.md

@@ -158,6 +158,8 @@ This will output a list of PRs in the format needed for the changelog:
   * <PR title> (PR: [#<number>](https://github.com/dotnet/roslyn/pull/<number>))
 ```
 
+Keep the raw output from `roslyn-tools pr-finder`; you'll use it unchanged in the pull request description in Step 10.
+
 ### Step 7: Update CHANGELOG.md
 
 Add an entry to `CHANGELOG.md` under the current version section (e.g., `# 2.121.x`):
@@ -174,7 +176,7 @@ Note: Leave the PR number blank initially (just `[#]`) - it will be updated afte
 
 ### Step 8: Filter Changelog Entries
 
-Review the changelog entries and remove any PRs that obviously don't affect VS Code. Remove entries that are:
+Review the changelog entries in `CHANGELOG.md` and remove any PRs that obviously don't affect VS Code. Remove entries that are:
 
 - **Infrastructure/Build changes**: CI/CD pipelines, build scripts, Azure DevOps configurations
 - **Visual Studio-only changes**: Features or fixes specific to Visual Studio IDE (not VS Code)
@@ -203,6 +205,7 @@ git push -u origin update/roslyn-<version>
 Create a pull request on GitHub:
 - Title: `Update roslyn to <new-version>`
 - Base: `main`
+- Description/body: the raw, unfiltered output from `roslyn-tools pr-finder` in Step 6, including the compare link and full PR list exactly as produced by the tool. Do not apply the Step 8 changelog filtering to the PR description.
 
 ### Step 11: Update Changelog with PR Number
 

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 5.8.0-1.26267.2 (PR: [#9321](https://github.com/dotnet/vscode-csharp/pull/9321))
+  * Fix racecondition on UnsuedDirectiveCache.Set (PR: [#83693](https://github.com/dotnet/roslyn/pull/83693))
+  * Fix single line script tag formatting (PR: [#83721](https://github.com/dotnet/roslyn/pull/83721))
+  * Implement type hierarchy LSP methods in Razor (PR: [#83637](https://github.com/dotnet/roslyn/pull/83637))
+  * Razor support for Implement Interface (PR: [#83636](https://github.com/dotnet/roslyn/pull/83636))
+  * Razor support for Implement Abstract Class (PR: [#83638](https://github.com/dotnet/roslyn/pull/83638))
+  * feat(LSP): add IsOptionServiceAvailable opt-in for CodeActionWithOptions filtering (PR: [#83650](https://github.com/dotnet/roslyn/pull/83650))
 
 # 2.142.x
 * Update Roslyn to 5.8.0-1.26262.9 (PR: [#9293](https://github.com/dotnet/vscode-csharp/pull/9293))

package.json

@@ -40,7 +40,7 @@
     "workspace"
   ],
   "defaults": {
-    "roslyn": "5.8.0-1.26262.10",
+    "roslyn": "5.8.0-1.26267.2",
     "omniSharp": "1.39.14",
     "razorOmnisharp": "7.0.0-preview.23363.1",
     "xamlTools": "18.7.11727.258"