Update release highlights

Author: ntrogh

release-notes/images/1_98/copilot-release-highlights.png

@@ -20,6 +20,7 @@ Welcome to the February 2025 release of Visual Studio Code. There are many updat
 * [Copilot Edits for notebooks](#notebook-support-in-copilot-edits-preview) - Iterate quickly on edits for your notebooks.
 * [Code search](#more-advanced-codebase-search-in-copilot-chat) - Let Copilot find relevant files for your chat prompt.
 * [Soft-delete in source control](#discard-untracked-changes-improvements) - Move untracked files to trash instead of deleting them.
+* [Unresolved diagnostics](#diagnostics-commit-hook-experimental) - Prompt when committing with unresolved diagnostics.
 * [Terminal IntelliSense (preview)](#terminal-intellisense-preview) - Rich completion support for your terminal.
 * [Drag & drop references](#peek-references-drag--drop-support) - Quickly open peek references in a new editor.
 * [Linux title bar](#custom-title-bar-on-linux) - Custom title bar support for Linux enabled by default.